does inertia apply when a body moves on a curved surface?

Asked by Pratibha Kamath | 30th Jul, 2011, 12:00: AM

Expert Answer:

Inertia applies to bodies which are in a state of rest or of uniform motion along a straight line. It is the inability of such bodies to change their state by themselves.
However, when a body moves on a curved surface, it is not moving uniformly along a straight line as its direction of motion changes at each point which gives it a non-uniform motion. An external force is required to move a body along a curved surface.

Answered by  | 1st Aug, 2011, 05:00: AM

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