Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

Two objects A and B are thrown upwards simultaeneously with the same speed.the mass of A is greater than the mass of B.suppose the air exerts a constant equal force resistance on the two bodies.which object rise to greater height
Asked by JAIBHARGAVA200 | 04 Nov, 2014, 04:52: PM
answered-by-expert Expert Answer
Let mA be the mass of object A and mB be the mass of object B.
Let aA and aB be the acceleration of the two bodies downwards due to the air resistance.
Since the bodies are acted upon by a constant air resistance, from the newton's law we can write that:
begin mathsize 14px style straight a subscript straight A equals straight F over straight m subscript straight A space and space straight a subscript straight B subscript space end subscript equals straight F over straight m subscript straight B Given space that space straight m subscript straight A greater than space straight m subscript straight B Hence space we space can space say space that space straight a subscript straight A less than straight a subscript straight B subscript space end subscript If space straight S subscript straight A space and space straight S subscript straight B space are space the space heights space attained space by space the space objects space straight A space and space straight B space respectively space when space thrown space upwards According space to space the space equation space of space motion : straight S subscript straight A equals ut space minus 1 half straight a subscript straight A straight t squared straight S subscript straight B equals ut space minus 1 half straight a subscript straight B straight t squared As space straight a subscript straight A less than straight a subscript straight B subscript space end subscript space we space get space that : straight S subscript straight A greater than space straight S subscript straight B Hence space we space can space say space that space object space straight A space rise space to space straight a space greater space height space than space object space straight B. end style
 


Answered by Jyothi Nair | 05 Nov, 2014, 10:26: AM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
A block of mass m is placed on a wedge as shown. Find difference between maximum and minimum (a(max) – a(min) ) horizontal rightward acceleration of wedge for which block remains at rest with respect to wedge. (A) 10g/9 (B) g/9 (C) g (D) None of these
question image
Asked by sahuaryanbro1.0 | 01 Jan, 2023, 10:17: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
find the velocity in rms
Asked by kashyspalbert91 | 11 Mar, 2022, 04:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Assertion :pseudo force in an imaginary force which is recognized only by a non inertial observer to explain the physical situation according to Newton's laws Reason:pseudo force has no physical origin of the the basic interaction in nature, it doesn't exist as on action reaction .
Asked by Sainajena311 | 23 Oct, 2019, 09:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
What are contact forces? Give some examples of contact and non contact forces.
Asked by Topperlearning User | 05 Jun, 2014, 02:29: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
What is Normal Reaction? Explain with diagram.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Give the formula of Spring Force and state the significance of the negative sign.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
A gardener is mowing a lawn by pushing and pulling the machine. In which condition is the normal force highest?
Asked by Topperlearning User | 05 Jun, 2014, 03:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Consider a book lying on a table. Which forces are acting on the book?
Asked by Topperlearning User | 05 Jun, 2014, 03:54: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
What do you mean by equilibrium under concurrent forces?
Asked by Topperlearning User | 05 Jun, 2014, 03:55: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Two forces of 5 kg and 12 kg are connected at the two end of the light inextensible string that passes over a frictionless pulley. Find the acceleration of the masses and the tension in the string, when the masses are released.
Asked by Topperlearning User | 05 Jun, 2014, 04:04: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×