A spring lies along the x-axis attached to a wall at one end and a block at the other end. The block rests on a friction less surface at x = 0. A force of constant magnitude F is applied to the block that begins to compress the spring, until the block comes to a maximum displacement $x_{m a x}$ .
During the displacement, which of the curves shown in the graph best represents the work done on the spring block system by the applied force?

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Solution

The correct option is A 1
As $^{'} F^{'}$ is a constant force
Work done by $F = F (d i s p l a c e m e n t) = F x \Rightarrow a$ straight line graph
$(1)$

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During the displacement, which of the curves shown in the graph best represents the kinetic energy of the block?

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The correct option is A 1As ′F′ is a constant forceWork done by F=F(displacement)=Fx⇒a straight line graph(1)

The correct option is A 1
As $^{'} F^{'}$ is a constant force
Work done by $F = F (d i s p l a c e m e n t) = F x \Rightarrow a$ straight line graph
$(1)$