A block performs simple harmonic motion with equilibrium point x=0. Graph of acceleration of the block as a function of time is shown. Which of the following statement is correct about the block?
A
Displacement from equilibrium is maximum at t=4s
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B
Speed is maximum at t=4s
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C
Speed is maximum at t=2s
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D
Speed is maximum at t=3s
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Solution
The correct option is A Speed is maximum at t=4s From the figure given in the question, the speed of block will be maximum at t=0,2 and 4. So, the block can execute the simple harmonic motion. At extreme points at time t=1s and t=3s, the direction of acceleration is change. So, at t=4s the speed of the block is maximum.