Rotational Motion Question 127

Question: A hoop rolls on a horizontal ground without Slipping with linear speed v . Speed of a particle P on the circumference of the hoop at angle θ is

Options:

A) 2vsin(θ/2)

B) vsinθ

C) 2vcos(θ/2)

D) vcosθ

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Answer:

Correct Answer: A

Solution:

[a]

vp=v2+v2+2vvcos(180θ)

vp=2v21cosθ

=2vsin(θ/2)



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