A body of mass executes simple harmonic motion of amplitude
PHYSICS · Multi-part · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics
Problem
A body of mass m executes simple harmonic motion of amplitude A. Its total mechanical energy is E. The amplitude of the motion is suddenly increased by 10\% while the mass and the spring constant remain unchanged.
(i) Express the new total mechanical energy E′ in terms of E.
(ii) Calculate the percentage change in total mechanical energy resulting from the increase in amplitude.
(iii) If the original total energy was 0.80J, find the new total energy to two significant figures.