2. A block of mass 1.5 kg is suspended from the ceiling by a spring with spring

ID: 1294361 • Letter: 2

Question

2. A block of mass 1.5 kg is suspended from the ceiling by a spring with spring constant k= 15 N/m. A force of 20 N is applied to the block in the +y-direction, thereby compressing the spring (see picture). The block is initially at rest. At time t = 0, the force is removed and the block starts to oscillate down and up. What is the amplitude of the oscillation?

(a)   0.5 m                                                     (b)   0.7 m
(c)   1.0 m                                                    (d)   1.3 m
(e)   2.0 m