Physics - SHM Question with Solution | TestHub

From the figure given in the question, the speed of block will be maximum at$t=0, 2 \mathrm{a}\mathrm{n}\mathrm{d}\mathrm{ }4$. So, the block can execute the simple harmonic motion. At extreme points at time$t=\mathrm{1 }\mathrm{s}$and$t=\mathrm{3 }\mathrm{s}$, the direction of acceleration is changed. So, at$t=\mathrm{4 }\mathrm{s}$the speed of the block is maximum.