Kinematics Question 527

Question: Two cars of masses m1andm2 are moving in circles of radii r1andr2 , respectively. Their speeds are such tha they make complete circles in the same time t. The ratic of their centripetal acceleration is

Options:

A) m1r1:m2r2

B) m1:m2

C) r1:r2

D) 1:1

Show Answer

Answer:

Correct Answer: C

Solution:

[c] Centripetal acceleration, ae=ω2r

Angular velocity, ω=2πT The cars make complete circle in same time.

As T1=T2ω1=ω2

ac1ac2=r1r2



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