Kinematics Question 485

Question: A car is moving in a circular horizontal track of radius 10 m with a constant speed of 10 m/sec. A plumb bob is suspended from the roof of the car by a light rigid rod of length 1.00 m. The angle made by the rod with track it’s [IIT 1992]

Options:

A) Zero

B) 30o

C) 45o

D) 60o

Show Answer

Answer:

Correct Answer: C

Solution:

tanθ=v2/rg=v2rg

θ=tan1(v2rg)

=tan1(10×1010×10)

θ=tan1(1)=45



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