Work-energy theorem, conservation laws, collisions, centre of mass.
Test yourself on Work, Energy & Momentum
5 real NSEP questions with instant answers — no signup, ~3 minutes.
Study notes are still being prepared.
Don't wait — Shishya can teach you this topic right now, on demand.
Ask Shishya to teach this →Shishya is your personal tutor for this topic. Pick a starter or open a free chat.
Q1 · Work, Energy & Momentum · HARD
A particle of mass m is attached to one end of a light string of length L. The other end is fixed at point O. The particle is given a horizontal velocity u = √(5gL) at the lowest point. The tension in the string when it makes an angle of 60° with the vertical is:
Q2 · Work, Energy & Momentum · MEDIUM
A ball of mass 0.5 kg is dropped from a height of 20 m onto a spring of spring constant 500 N/m placed on the ground. If 20% of the mechanical energy is lost during the collision, the maximum compression of the spring is closest to:
Q3 · Work, Energy & Momentum · HARD
A small ball of mass m is released from rest at a height h above the lowest point of a smooth hemispherical bowl of radius R (where h < R). At the lowest point, the ball collides with another identical ball at rest. If the collision is perfectly elastic, the maximum height attained by the second ball after collision is:
Q4 · Work, Energy & Momentum · MEDIUM
A particle of mass 2 kg starts from rest and moves under the action of a force F = (12 - 2x) N, where x is in meters. The maximum kinetic energy attained by the particle is:
Q5 · Work, Energy & Momentum · MEDIUM
A ball is dropped from height h onto a horizontal floor. After each bounce, it rises to 3/4 of the height from which it fell. The total distance traveled by the ball before coming to rest is: