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Q.

A particle is in linear simple harmonic motion between two points A and B, 10cm apart take the direction from A to B as the +ve direction and choose the incorrect statements.

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a

The sign of velocity, acceleration and force on the particle when it is 3cm away from A going towards B are positive

b

The sign of velocity of the particle at C going towards O is negative

c

The sign of velocity acceleration and force on the particle when it is 4cm away from B going towards A are negative

d

The sign of acceleration and force on the particle when it is at point B is negative

answer is B.

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Detailed Solution

O is the equilibrium position and acceleration of the particle is always directed towards o. So whne the particle is going towards o, at position c, velocity and acceleration both are positive so option - (2) is wrong.

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