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Question
Statement-1 : A body cannot roll on smooth horizontal surface.
Statement-2 : When a body rolls purely, the point of contact should be at rest with respect to surface.
Statement-1 : A body cannot roll on smooth horizontal surface.
Statement-2 : When a body rolls purely, the point of contact should be at rest with respect to surface.
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Solution
The correct option is D Statement-1 is true, Statement-2 is true and Statement-2 is NOT the correct explanation for Statement-1.
Statement-1 is true as without friction there cannot be any rolling. The frictional force would be absent which is responsible for providing a torque for rolling. The second statement is also true but is not the reason for the first statement.
Statement-1 is true as without friction there cannot be any rolling. The frictional force would be absent which is responsible for providing a torque for rolling. The second statement is also true but is not the reason for the first statement.
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