In which direction should the boy apply the force, in order to stop a trolley sliding downward on the staircase?

Downward direction

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Upward direction

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Sideways

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Question is wrong since force does not have any direction

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Solution

The correct option is B
Upward direction

The boy has to apply a force in the upward direction, to stop it. If you apply a downward force, the trolley will further slide down and will not stop.

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In which direction should the boy apply the force, in order to stop a trolley sliding downward on the staircase?

The correct option is B Upward direction The boy has to apply a force in the upward direction, to stop it. If you apply a downward force, the trolley will further slide down and will not stop.

The correct option is B
Upward direction

The boy has to apply a force in the upward direction, to stop it. If you apply a downward force, the trolley will further slide down and will not stop.