Question:
A solid sphere is rolling on a rough horizontal surface. Acceleration of contact point is zero.
A solid sphere can roll on the smooth surface.
A solid sphere is rolling on a rough horizontal surface. Acceleration of contact point is zero.
A solid sphere can roll on the smooth surface.
Updated On: Jul 28, 2022
- If both assertion and reason are true and reason is the correct explanation of assertion
- If both assertion and reason are true but reason is not the correct explanation of assertion
- If assertion is true but reason is false
- If both assertion and reason are false
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The Correct Option is D
Solution and Explanation
During rolling motion, there is radial acceleration towards the centre. Hence, the contact point moves vertically upward.
On smooth surface, sphere will slide without rolling.
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Concepts Used:
System of Particles and Rotational Motion
- The system of particles refers to the extended body which is considered a rigid body most of the time for simple or easy understanding. A rigid body is a body with a perfectly definite and unchangeable shape.
- The distance between the pair of particles in such a body does not replace or alter. Rotational motion can be described as the motion of a rigid body originates in such a manner that all of its particles move in a circle about an axis with a common angular velocity.
- The few common examples of rotational motion are the motion of the blade of a windmill and periodic motion.