Rotational Motion Question 182

Question: A wheel of radius 1 m rolls forward half are revolution on a horizontal ground. The magnitude of the displacement of the point of the wheel initially in contact with the ground is

Options:

A) π

B) 2π

C) 2π

D) π2+4

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Answer:

Correct Answer: D

Solution:

[d] Linear distance moved by wheel in half revolution =πr.

Point P1 after half revolution reaches at P2 vertically 2m above the ground.

DisplacementP1P2

π2r2+22=π2+4

r=1m



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