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Question
Statement 1: A wheel moving down frictionless inclined plane will slip and not roll on the plane.
Statement 2: It is the frictional force which provides a torque necessary for a body to roll on a surface.
Statement 1: A wheel moving down frictionless inclined plane will slip and not roll on the plane.
Statement 2: It is the frictional force which provides a torque necessary for a body to roll on a surface.
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Solution
The correct option is B Statement 1 is true, Statement 2 is true; Statement 2 is a correct explanation for Statement 1
The surface is smooth, thus there is no friction .As net torque about the point O is zero ⟹α=0Thus the wheel will do only translational motion but not rotational motion.Also, the frictional force provides the torque about O necessary for a body to exhibit rotational motion.Hence statement 1 is true, statement 2 is true; Statement 2 is a correct explanation for Statement 1
The surface is smooth, thus there is no friction .
As net torque about the point O is zero ⟹α=0Thus the wheel will do only translational motion but not rotational motion.
Also, the frictional force provides the torque about O necessary for a body to exhibit rotational motion.
Hence statement 1 is true, statement 2 is true; Statement 2 is a correct explanation for Statement 1
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