Kinematics Question 541

Question: A car is moving with speed 30 m/sec on a circular path of radius 500 m. it’s speed is increasing at the rate of 2m/sec2, What is the acceleration of the car [MP PMT 2003; Roorkee 1982; RPET 1996; MH CET 2002]

Options:

A) 2m/sec2

B)2.7m/sec2

C) 1.8m/sec2

D)9.8m/sec2

Show Answer

Answer:

Correct Answer: B

Solution:

Net acceleration in nonuniform circular motion, a=at2+ac2

=(2)2+(900500)2=2.7m/s2

at= tangential acceleration ac= centripetal acceleration =v2r



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