Kinetic Energy & Work-Energy Theorem: JEE Questions & Solutions

A body of mass 2 kg is moving along x-direction such that its displacement as function of time is given by x(t) = t^2 + t + m, where = 1…

Two masses m and 2m are connected by a light string going over a pulley (disc) of mass 30m with radius r = 0.1 m. The pulley is mounted in…

A flywheel having mass 3 kg and radius 5 m is free to rotate about a horizontal axis. A string having negligible mass is wound around the…

A bob of mass m is suspended at a point O by a light string of length l and left to perform vertical motion (circular) as shown in the…

A block of mass 1 kg, moving along x with speed vi = 10 m/s enters a rough region ranging from x = 0.1 m to x = 1.9 m. The retarding force…

A small mirror of mass m is suspended by a massless thread of length l. Then the small angle through which the thread will be deflected…

A block of mass 2 kg is attached to one end of a massless spring whose other end is fixed at a wall. The spring-mass system moves on a…

The bob of a pendulum was released from a horizontal position. The length of the pendulum is 10 m. If it dissipates 10 of its initial…

Section – B A spherical body of mass 2 kg starting from rest acquires a kinetic energy of 10000 J at the end of 5th second. The force acted…

A particle of mass 10 g moves in a straight line with retardation 2x, where x is the displacement in SI units. Its loss of kinetic energy…

A body is dropped on ground from a height 'h1 and after hitting the ground, it rebounds to a height 'h2. If the ratio of velocities of the…

The momentum of a body is increased by 50. The percentage increase in the kinetic energy of the body is:

Given below are two statements: Statement I: A truck and a car moving with the same kinetic energy are brought to rest by applying brakes…

A car accelerates from rest to 2 m/s. The energy spent in this process is E1. The energy required to accelerate the car from 1 m/s to 2 m/s…