Question

A block is executing SHM on a rough horizontal surface under the action of an external variable force.The force is plotted against the position x of the particle from the mean position

Answer 1

Now when x is positive v is positive then x keeps on increasing but when x becomes maximum then x starts decreasing therefore, v becomes negative therefore,

A->2

Now when x is positive v is negative then x will keep on decreasing and become negative therefore, B->4

when x is negative and v is positive x increases and becomes positive finally therefore, C->1

when x is negative v is negative then x keeps on decreasing until becomes minimum after that it again starts increasing leading to positive v therefore, D-> 3