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State of Equilibrium

A body is in ...

Question

A body is in dynamic equilibrium when it is

A

in the state of rest

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B

in the state of motion

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C

possessing instantaneous velocity

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D

moving with non-uniform speed.

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Solution

The correct option is B
in the state of motion

When a body remains in the same state of motion (translational or rotational) under the influence of several forces, the body is said to be in dynamic equilibrium. For example- a stone tied at the end of a string when whirled in a circular path with a uniform speed is in dynamic equilibrium.

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