A 100 g block is connected to a horizontal massless spring of force constant `25.6(N)/(m)` As shown in Fig. the block is free to oscillate on a horizontal frictionless surface. The block is displaced 3 cm from the equilibrium position and , at `t=0`, it is released from rest at `x=0` It executes simple harmonic motion with the postive `x-direction indecated in Fig. The position time `(x-t)` graph of motion of the block is as shown in Fig. Q. When the block is at position A on the graph, itsA. position and velocity both are negativeB. position is positive and velocity is negativeC. position is negative and velocity is positiveD. position and velocity both the positive

A 100 g block is connected to a horizontal massless spring of force c

1.	A 100 g block is connected to a horizontal massless spring of force constant `25.6(N)/(m)` As shown in Fig. the block is free to oscillate on a horizontal frictionless surface. The block is displaced 3 cm from the equilibrium position and , at `t=0`, it is released from rest at `x=0` It executes simple harmonic motion with the postive `x-direction indecated in Fig. The position time `(x-t)` graph of motion of the block is as shown in Fig. Q. When the block is at position A on the graph, itsA. position and velocity both are negativeB. position is positive and velocity is negativeC. position is negative and velocity is positiveD. position and velocity both the positive
Answer» Correct Answer - B At position A block is in positive region and slope is negative, so velocity is negative.

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