what are the two reasons for variation of g with latitude?
Asked by ujjwalviky2003 | 26th Oct, 2017, 07:42: PM
(1) The earth is not a perfect sphere. It is flat at poles and bulges out at equator. Thus a point at poles is closer to the dense core of earth than the point
on equator. Hence the free-fall acceleration at sea level would increase as one proceeds from equator to poles.
(2) Earth is rotating. An object which is undergoing circular motion experiences centripetal acceleration in the radial direction and this depends on the radius.
Hence at equator this centripetal force which is in opposite direction to gravitational acceleration is more and almost nill at poles. Hece due to this effect, acceleration due to gravity is less at equator than that of at poles.
Answered by | 27th Oct, 2017, 04:44: PM
- 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?
- Derive an expression for variation of g with depth
- State the Newton's Law of Gravitation. Also state its important properties.
- Which law explains the rotation of planets around the sun and the rotation of satellites around the planets?
- Define gravitational constant.
- Two bodies of mass 1kg and 2kg kept 4m apart exert a force of F Newton. A third body of mass 3kg is introduced in the set up and kept near 2kg mass. Calculate the total force on the 1kg body.
- On which two quantities does the gravitational force depend?
- Consider two bodies X and Y with mass m1 and m2 separated by distance ‘r’ meters. Suppose mass of X is doubled and mass of Y is tripled also the distance between them is doubled. Find the ratio of the gravitational force before and after changing the masses and distance.
- G is called Universal Gravitation Constant. Why?
- What will be the force of attraction between two bodies on 100 kg separated by 100 m?
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Verify mobile number
Enter the OTP sent to your number