A huge ball is rolling on the ground. What force(s) is(are) applied on the ball?
A
Rolling friction
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B
Sliding friction
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C
Gravitational force
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D
Air drag
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Solution
The correct options are A Rolling friction C Gravitational force D Air drag As the ball is rolling so rolling friction is acting on the ball. It is not sliding so sliding friction is not acting. On any object on the earth the gravitational force of earth is always acting. Also the ball is with huge size and it is moving. So we cannot neglect the air drag on it.