Acceleration Due To Gravity

CBSE XI Science Physics Gravitation

how does acceration due to gravity vary with altitude and depth. explain giving complete mathematical expressions

ICSE X Physics Work, Energy and Power

A body of mass 1kg is thrown vertically upwards up with an intial speed of 5m/s.what is the magnitude and direction of force due to gravity acting on the body when is at its highest point (Icse 1997)

CBSE X Physics Light - Reflection and Refraction

If light is a electromagnetic wave and light has very less mass and gravitational force is directly proportional to mass of the body and therefore this neglible mass of the sun's electromagnetic wave (light) allows them to escape the gravity of the sun and travel towards the earth .Then why this theory is not applicable or hold true for dark holes we know due dark holes's strong gravitational force light can't escape but you told gravitational pull is directly proportional to mass and light has neglible mass so it should also escape dark holes? please explain this.

CBSE IX Physics Motion

A ball is thrown vertically upwards with a given velocity 'u' such that it rises for T seconds(T>1), what is the distance travelled by the ball during the last one second of ascent (in metres)? (Acceleration due to gravity is g m/second square)

CBSE IX Physics Gravitation

. In free fall of objects the acceleration in velocity due to gravity is independent of mass of those objects hence a heavy object does not fall faster than alight object. Why?

 

CBSE IX Physics Gravitation

A bear fell down from a pole 20m high,suddenly he fell down from there, he reaches the ground in 2s. CAN YOU TELL ME WHAT IS THE COLOR OF THE BEAR??

CBSE IX Physics Gravitation

a particle is taken to height r above the earth surface where r is the radius of earth the accleration due to gravity is

 

 but according to me

 

the earth gravitation is same everywhere in the universe

CBSE XI Science Physics Gravitation

what are the two reasons for variation of g with latitude?

CBSE IX Physics

where it will profitable to buy one kilogram sugar?

 

ans.. but according to me

 

at poles it is best to buy one kilogram sugar because the value of g is greater at equator then at poles

 

but accoording to you the answer is

ICSE X Physics Work, Energy and Power

please solve these 4 and the previous 3 questions as soon as possible

ICSE X Physics Work, Energy and Power

 

 

please solve this 

CBSE IX Physics Force and Laws of Motion

An elevator is descending with uniform acceleration. To measure the acceleration, a person in the elevator drops the coin at a moment the elevator starts. The coin is 6 ft above the floor of the elevator at the time it is dropped. the person observes that coin strikes the floor in 1 second. Calculate from these datas the accelerartion of t the elevator.

ICSE VII Physics Physical Quantities and Measurement

What is gm/r*r

NEET1 ALL Class Physics Gravitation

If R is the radius of the earth and g the acceleration due to gravity on the earth's surface, the mean density of the earth is

(a)4piG/3gR               (b)3piR/4gG

(c)3g/4piRG               (d)piRg/12G

NEET1 ALL Class Physics Gravitation

The decrease inthe value of g on going to a height R/2 above the earth's  surface will be

(a)g/2            (b)5g/9

(c)4g/9           (d)g/3

NEET1 ALL Class Physics Gravitation

The acceleration due to gravity of that planet whose mass and radius are half those of earth, will be (g is acceleration due to gravity at earth's surface) (a)2g (b)g (c)g/2 (d)g/4 Answer is: (a)2g

ICSE X Physics Force

Does every body has centre of gravity

CBSE XI Science Physics System of Particles and Rotational Motion

sir here in the question weight of the body is given in kg then why is the value of 'W' is calculated by taking that 20kg as 20g. please sir solve my query as soon as possible. Asked by jaychandran1967 18th December 2017 7:24 PM

Answered by Expert

please explain in detail?

CBSE XI Science Physics Gravitation

In the derivation of variation of acceleration due to gravity with the depth of the earth,

 

Mass of the sphere is, 

 

M'=(M/(4/3*pie*R^3))*(4/3*pie*(R-d)^3)

 

I can't understand how this formula came to be?

JEE Plances JEE (Main) Physics Motion in a Straight Line

Solve this

NEET1 NEET1 Physics

The maximum vertical distance through which a fully dressed astronaut can jump on  the earth is 0.5 m. If mean density of the moon is two thirds that of the earth and  radius is one quarter that of the earth, the maximum vertical distance through which  he can jump on the moon and the ratio of time of duration of the jump 

ICSE X Physics

Suppose the earth shrinks to one third of its size without loosing any mass.the value of g on the surface would become (1)g/3 (2)g/9 (3)(cuberoot of 9)g (4)g

CBSE IX Physics

If the radius of  Earth was to be increased by a factor of 3. By what factor would its density have to be changed to keep the value of  'g' the same.

CBSE IX Physics

An astronaut on the moon measure the accleration due to gravity to be 1.7 m/s^2. He knows that the radius of the moon is about 0.27 times the radius of Earth. What is his estimate of the ratio of the mass of the Earth to that of moon?('g' on Earth = 9.8 m/s^2)

ICSE IX Physics Laws of Motion

when a leaf and a cricket ball is dropped at the same time from the same height, why does the ball reach the ground first even though acceleration due to gravity is same? it is said that for anybody, irrespective of its mass has the same acceleration due to gravity

CBSE IX Physics Gravitation

Explain why the value of g is zero at the centre of the earth

CBSE X Physics

  IF RADIUS  OF EARTH INCREASES BY 1% AND ITS MASS REMMAINS  SAME THEN BY  WHAT PERCENTAGE WILL  ACCLERATION DUE TO GRAVITY INCREASE/DECREASE.

CBSE IX Physics The Pull of The Earth

acceleration due to gravity

CBSE IX Physics Gravitation

a ball is thrown upwards with an initial velocity of .5m/sec how much time it will take to reach the highest point  

CBSE IX Physics

Derive mathematical expression for acceleration due to gravity 'g'

CBSE IX Physics

Identical packets are dropped from two aeroplane-one above the equator and other above the north pole , both at heights 'h' . Assuming all conditions to be identical, will those packets take the same time to reach the surface of the earth? Justify your answer .

CBSE XI Science Physics Gravitation

Derive an expression for variation of g with depth

CBSE XI Science Physics Gravitation

A woman of mass 50 kg is standing in an elevator. Suddenly the cable of the elevator break and the elevator begin to fall freely .the force exerted by the floor of the elevator on the woman is?

Maharashtra IX Physics

whan an object falls freely to the ground its acceleration is uniform 

ICSE X Physics Laws of Motion

What is the difference between mass and weight of an object.will the mass and weight of an object on the earth be same as their values on Mars?why?

Maharashtra IX Physics

    give scientific reason  when an object falls freely to the ground its acceleration is uniform  

Maharashtra X Physics

What would be the value of 'g' on the surface of the earth if its mass was twice as large and radius half of what it is now?

JEE Main Physics

A star collapse onto itself from an initial radius R’ with its mass remaining unchanged. Which curve in figure best gives the gravitational acceleration a' on the surface of the star as a function of the radius of the star during the collapse?

CBSE XI Science Physics

Prove that the acceleration due to gravity decreses by twice when an object is taken to same height instead of depth.

CBSE XI Science Physics

  PLEASE SIR ANSWER MY DOUBT QUICKLY. ACCORDING TO PHYSICS ALL OBJECTS FALL ON THE EARTH AT THE SAME TIME AND AT SAME RATE. BUT WHEN WE SEE VISUALLY WE COME TO A NOTON THAT HEAVIER OBJECTS FALL FASTER THAN LIGHTER OBJECTS. IS IT TRUE? GALILEO DISCOVERED THROUGH THIS EXPERIMENT THAT THE OBJECTS FELL WITH THE SAME ACCELERATION, PROVING HIS PREDICTION TRUE, WHILE AT THE SAME TIME DISPROVING ARISTOTLE'S THEORY OF GRAVITY (WHICH STATES THAT OBJECTS FALL AT SPEED PROPORTIONAL TO THEIR MASS). WHICH SCIENTIST IS SAYING THE RIGHT THING? I FIND EVEN MY TEACHERS SO CONFUSING IN THEIR EXPLANATION.

JEE Main Physics

a ball is thrown up vertically and returns back to thrower in 6s.assuming there is no air friction, calculate the acceleration while ball is returning  

CBSE IX Physics Gravitation

A ball is thrown vertically upwards and rises to a height of 126.5 m. Calculate the (i) velocity by which the ball was thrown upwards and (ii) the time taken by the ball to reach the highest point. (Given is g = 9.8 ms–²) At Least 100 to 150 words

ICSE IX Physics Measurements and Experimentation

Calculate time period of a simple pendulum of length 1.12m on the surface of moon. The acceleration due to gravity on surface of moon is 1/6th of the acceleration due to gravity on earth.  

CBSE IX Physics Gravitation

Acceleration due to gravity. Derive its formula.

CBSE IX Physics Gravitation

if distance between the two masses is increased by  factor of 3 then what will be the force of gravity  between them be? 

CBSE IX Physics Gravitation

Acceleration due to gravity becomes 1/4th. Show it at what height.

CBSE XI Science Physics

Find the variation of acceleration due to gravity below the surface of earth at depth'd'  

ICSE IX Physics Laws of Motion

What gravity can be increase or decrease by any mean. 

ICSE VII Physics Motion

What gravity can be increase or decrease by any mean

ICSE X Physics Work, Energy and Power

physics

CBSE XI Science Physics

A stone falling from the top of a vertical tower has descended x metres when another is let fall from a point? y metres below the top. if they fall from rest and reach the ground together, show that the height of the tower is

ICSE VII Physics Motion

What gravity is present on the sun ? 

ICSE X Physics Work, Energy and Power

Derivation of w=mgh

CBSE VIII Science Force and Pressure

g

Maharashtra X Physics

Explain why the value of g is zero at the centre of the earth.

ICSE IX Physics Laws of Motion

How does  acclelaration due to gravity varies at poles and at equator

CBSE IX Physics Gravitation

Derive an expression for "g".

CBSE IX Physics Gravitation

can you please help me to answer these question.

CBSE IX Physics

g stands for ______

CBSE IX Physics Gravitation

When an object falls freely to the ground its acceleration is inform  

ICSE IX Physics Measurements and Experimentation

How is the S.I. unit of accleration due to gravity  N/m?

CBSE IX Physics Gravitation

What is difference between gravitational constant and acceleration due to gravity

CBSE IX Physics Gravitation

weight of the body is zero in free fall why?

CBSE IX Science

difference between G , g

CBSE XI Science Physics Gravitation

if acceleration due to gravity g at height h

CBSE XI Science Physics Gravitation

what is the derivation of formula of gravity  

CBSE IX Physics Gravitation

what is the weight of an object at the centre of the earth 

CBSE XI Science Physics Gravitation

why the value of g is zero at the centre of the earth

CBSE IX Science Gravitation

Why the value of g at poles is 9.9m/s²?

NEET NEET Physics Gravitation

At which height from the earth's surface does the acceleration due to gravity decrease by 1%?

NEET NEET Physics Gravitation

A spherical planet has a mass M_{p} and diameter D_{p} A particle of mass m falling freely near the surface of this planet will experience an aceleration due to gravity, equal to -

NEET NEET Physics Gravitation

at what distance from the center of the earth the value of acceleration due to gravity g will ne half that on the surface

CBSE XI Science Physics Work, Energy and Power

Can you tell an example about a body having 0 velocity and still accelerating?

NEET NEET Physics Gravitation

imagine a new planet having the same density as that of earth but it is 3 times bigger than the earth in size. if the acceleration due to gravity on the surface of earth is g and that of the new planet is g', then relationship between g and g' is