Questions

In S.H.M. at the equilibrium position

a) Amplitude is minimum

b) Acceleration is zero

c) Velocity is maximum d) P.E is maximum

60 mins Expert Faculty Ask Questions

a

all true

b

b, c, d true

c

b, c true

d

a, b, d true

detailed solution

Correct option is C

Amplitude is the maximum distance of a particle from equilibrium position during the course of oscillation. So (a) is wrong as amplitude remains constant. Acceleration . At equilibrium x = 0, so (b) is right . At equilibrium, x = 0 So (c) is right. At equilibrium, x = 0 so U = 0. Therefore (d) is wrong.

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One end of an ideal spring is connected with a smooth block with the other end with rear wall of driving cabin of a truck as shown in figure. Initially, the system is at rest. If truck starts to accelerate with a constant acceleration ‘a’ , then the block (relative to truck ):

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