Question

In above problem, what is 

(a) the speed of the mass when the spring is compressed by 1.0 cm? 

(b) potential energy of the mass when it momentarily comes to rest ? 

(c) total energy of the oscillating mass ?

Answer 1

(b) PE of the mass when it momentarily comes to rest (at the extreme position), i.e.,

(c) Total energy of the oscillating mass (E) = its potential energy at the extreme position (U₀ ) = 0.24 J