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Work, Power and Energy — BITSAT Physics PYQs

18 previous year questions from Work, Power and Energy with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

18 questionsPhysicsSolutions on every page

A force of F - 0.5 ~N is applied on lower block as shown in figure. The work done by lower block on upper block for a displacement of 3 m of the upper block with respect to ground

BITSAT 2024 Solution View → 2

A pendulum of mass 1 kg and length l=1 ~m is released from rest at angle =60^ . The power delivered by all the forces acting on the bob at angle =30^ will be ( . Take, .g=10 ~m / s

BITSAT 2024 Solution View → 3

An ideal massless spring S can be compressed 1 m by a force of 100 N in equilibrium. The same spring is placed at the bottom of a frictionless inclined plane inclined at 30^ to the

BITSAT 2024 Solution View → 4

A spherical ball of mass 20 kg is stationary at the top of a hill of height 100 m . It rolls down a smooth surface to the ground, then climbs up another hill of height 30 m and fin

BITSAT 2024 Solution View → 5

A particle of mass 2 kg is on a smooth horizontal table and moves in a circular path of radius 0.6 m . The height of the table from the ground is 0.8 m . If the angular speed of th

BITSAT 2024 Solution View → 6

A machine gun fires 300 bullets per min if the mass of each bullet is 10 ~g and the velocity of the bullets is 600 ~ms ⁻¹ , the power (in kW ) of the gun is

BITSAT 2022 Solution View → 7

A boy pushes a toy box 2.0 ~m along the floor by means of a force of 10 ~N directed downward at an angle of 60^ to the horizontal. The work done by the boy is

BITSAT 2020 Solution View → 8

A body is moving unidirectionally under the influence of a source of constant power. The square of its displacement in time t is proportional to

BITSAT 2019 Solution View → 9

An elastic string of unstretched length L and force constant k is stretched by a small length x . It is further stretched by another small length y. The work done in the second str

BITSAT 2015 Solution View → 10

A small block of mass m is kept on a rough inclined surface of inclination fixed in a elevator. The elevator goes up with a uniform velocity v and the block does not slide on the w

BITSAT 2014 Solution View → 11

A 3.628 ~kg freight car moving along a horizontal rail road spur track at 7.2 ~km / hour strikes a bumper whose coil springs experiences a maximum compression of 30 ~cm in stopping

BITSAT 2013 Solution View → 12

A light inextensible string that goes over a smooth fixed pulley as shown in the figure connects two blocks of masses 0.36 ~kg and 0.72 ~kg . Taking g =10 ~m / s ², find the work d

BITSAT 2013 Solution View → 13

If the unit of force and length be each increased by four times, then the unit of energy is increased by

BITSAT 2012 Solution View → 14

Which of the following must be known in order to determine the power output of an automobile?

BITSAT 2012 Solution View → 15

A massless platform is kept on a light elastic spring as shown in fig. When a sand particle of mass 0.1 ~kg is dropped on the pan from a height of 0.24 ~m , the particle strikes th

BITSAT 2011 Solution View → 16

The potential energy for a force field F is given by U(x, y)= (x+y) . The force acting on a particle at position given by coordinates (0, / 4) is -

BITSAT 2010 Solution View → 17

A long string is stretched by 2 ~cm and the potential energy is V . If the spring is stretched by 10 ~cm , its potential energy will be

BITSAT 2010 Solution View → 18

A chain of mass M is placed on a smooth table with 1 / n of its length L hanging over the edge. The work done in pulling the hanging portion of the chain back to the surface of the

BITSAT 2009 Solution View →

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