Question

4. When the applied force doubled, then friction becomes (a) doubled (b) halved (c) quadrupled (d) zero​

Answer 1

DOUBLED

If the body is not moving, then static frictional force comes into play.Static friction is a self adjusting force, hence when the applied force is doubled,then friction becomes double. But when the object is moving, then kinetic friction comes into play.

Answer 2

Answer:

When the applied force doubled, then friction becomes doubled

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