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AIIMS 2017
Exam
AIIMS
Year
2017
Subject
Physics
Chapter
Rotational Motion

AIIMS 2017 · Physics · Rotational Motion

Assertion : A solid sphere is rolling on a rough horizontal...

Assertion : A solid sphere is rolling on a rough horizontal surface. Acceleration of contact point is zero. Reason : A solid sphere can roll on the smooth surface.Assertion : A solid sphere is rolling on a rough horizontal surface. Acceleration of contact point is zero. Reason : AAssertion : A solid sphere is rolling on a rough horizontal surface. Acceleration of contact point is zero. Reason : A

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

C. If assertion is true but reason is false.

Step-by-step solution

Assertion : A solid sphere is rolling on a rough horizontal surface. Acceleration of contact point is zero. Reason : A
During rolling motion, there is radial acceleration towards the centre. Hence, the contact point moves vertically upward.Assertion : A solid sphere is rolling on a rough horizontal surface. Acceleration of contact point is zero. Reason : A
On smooth surface, sphere will slide without rolling.
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