Kinematics Question 755

Question: A wheel completes 2000 revolutions to cover the 9.5 km. distance. then the diameter of the wheel it’s [RPMT 1999]

Options:

A) 1.5 m

B)1.5 cm

C) 7.5 cm

D)7.5 m

Show Answer

Answer:

Correct Answer: A

Solution:

distance covered in n revolution = n 2p r= $ n\pi D $

$ \Rightarrow 2000\pi D=9500 $ [As n = 2000, distance = 9500 m]

therefore $ D=\frac{9500}{2000\times \pi }=1.5m $



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