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
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Solution
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