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Work, Power and Energy — JEE Main & Advanced NSEP 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 questionsNSEPSolutions on every page

A block of mass 2 kg drops vertically from a height of 0.4 m onto a spring whose force constant K is 1960 ~N / m . Therefore, the maximum compression of the spring is

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Motion of a particle in a plane is described by the non-orthogonal set of coordinates (p, q) with unit vectors ( p , q ) inclined at an angle as shown in the diagram. If the mass o

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A body of mass 4 kg moves under the action of a force F = (4 +12 t^2 ) N , where t is the time in second. The initial velocity of the particle is (2 + +2 k ) ms ⁻¹ . If the force i

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Paragraph: A wheel of a car is made up of two parts (1)the central metal rim, and (2)the rubber tyre. The width of the tyre W=16.5 ~cm and height h=10.7 ~cm . The rim overlaps the

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A particle rests in equilibrium under two forces of repulsion whose centres are at distances of a and b from the particle. The forces vary as the cube of the distance. The forces p

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The potential energy of a particle of mass m in a conservative force field can be expressed as U= x- y where (x, y) denote the position coordinates of the body. The acceleration of

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A heavy metal block is dragged along a rough horizontal surface at a constant speed of 20 ~km / hr . The coefficient of friction between the block and the surface is 0.6 . The bloc

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A body of mass 1.0 kg moves in X-Y plane under the influence of a conservative force. Its potential energy is given by U =2 x+3 y where (x, y) denote the coordinates of the body. T

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The potential energy (U) of a particle moving in a potential field varies with its displacement ( x ) as shown below. The variation of force F ( x ) acting on the particle as a fun

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The resistive force on an aeroplane flying in a horizontal plane is given by F _ f = kv ^2 , where k is constant and v is the speed of the aeroplane. When the power output from the

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If the force acting on a body is inversely proportional to its speed, the kinetic energy of the body varies with time tas

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A particle of mass m is located in a one dimensional potential field U(x)=U₀(1- a x) ; U ₀ and a are constants. Which of the following statement/s is/are correct?

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Consider a particle of mass m with a total energy E moving in a one dimensional potential field. The potential V ( x ) is plotted against x in the figure beside. The plot of moment

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A motor pump is used to deliver water at a certain rate r from a given pipe. To obtain thrice as much water from the same pipe in the same time, the power of the motor has to be in

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As shown in figure, a block of mass m is projected from wall A with velocity 2 v ₀ on the rough surface with constant sliding friction to hit the wall B with velocity v ₀ . With wh

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As shown in the figure, a particle of mass m=10⁻¹⁰ ~kg , moving with velocity v ₀=10^5 ~m / s approaches a stationary fixed target with impact parameter b from a large distance. If

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The force F (x) acting on a body of mass m changes with position x (in meter) as shown. It is given that the potential energy U (x)=0 at x=0 Choose correct option(s).

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A particle of mass m moves in a straight line under the influence of a certain force such that the power ( P ) delivered to it remains constant. Starting from rest, the straight li

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