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Law of Conservation of Mechanical Energy

A motor cycli...

Question

A motor cyclist rides around vertical wall and does not fall down while riding because:

A

The force of gravity disappears

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B

He loses weight some how.

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C

He is kept in this path due to the force exerted by surrounding air.

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D

The weight force of the wall balances his weight.

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Solution

The correct option is D The weight force of the wall balances his weight.
The component of normal force balances the weight of bike rider. Thus, if the wall is perfectly vertical, only frictional force of the wall balances the weight.

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