A mass attached to a horizontal spring of force constant executes SHM with amplitude
PHYSICS · Subjective · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics
Problem
A 250g mass attached to a horizontal spring of force constant 100Nm−1 executes SHM with amplitude 8.0cm. The block is released from the extreme position at t=0.
(i) At what displacement from the mean position will the kinetic energy equal the potential energy?
(ii) Find the displacement at which the kinetic energy is 75% of the total mechanical energy.
(iii) Calculate the speed of the block at each of the two displacements obtained in parts (i) and (ii).