Work, Energy an...

Velocity time graph of a particle of mass 2kg moving in a straight line is as shown in fig. Work done by all forces on the particle is

A solid sphere rolls without slipping and presses a spring of spring constant k as shown in Fig. Then the compression in the spring will be

The blocks of mass m each are connected to a spring of spring constant k as shown. The maximum displacement in the block is

The bob A of a simple pendulum is released when the string makes an angle of 45⁰ with the vertical. It hits another bob B of the same material and same mass kept at rest on the table. If the collision is elastic

If W₁, W₂, W₃ represent the work done in moving a particle from A to B along three different paths 1,2,3 respectively as shown in the gravitational field of a point mass m , find the correct relation between W₁, W₂ and W₃

A stationary particle explodes into two particles of masses m₁ and m₂ which move in opposite directions, with velocities v₁ and v₂. The ratio of their kinetic energies (E₁ / E₂) is

Power supplied to a particle of mass 2 kg varies with time as P = 3 t²/2 watt, where t is in seconds. If velocity of particle at t = 0 is v = 0, the velocity of particle at t = 2 sec will be

Liquid of density ρ flows along a horizontal pipe of uniform area of cross section a with a velocity v through a right angled bend. What force should be applied to the bend to hold it in equilibrium?

A chain of length l and mass M is held on a frictionless table with (1/n)th part hanging over the edge. Work done in pulling the chain is directly proportional to