A wheel is making 600 rpm. Find the time taken by it to come to rest w

1.	A wheel is making 600 rpm. Find the time taken by it to come to rest with retardation  rad/sec2
Answer» ong>ANSWER: Correct OPTION is A π/2 Initially ν=900r.p.m= 60 900 =15 s −1 Thus ω 1 =2πν=30π rad/s and ω 2 =0 Using, ω 2 =ω 1 +αt, where t=60 s, we get: 0=30π+α(60) or, α=− 2 π rad/s 2 (-ve SIGN shows angular retarding acceleration)

A wheel is making 600 rpm. Find the time taken by it to come to rest with retardation  rad/sec2

Answer»

ong>ANSWER:

Correct OPTION is

π/2

Initially ν=900r.p.m=

900

=15 s

−1

Thus ω

=2πν=30π rad/s and ω

Using, ω

=ω

+αt, where t=60 s, we get:

0=30π+α(60)

or, α=−

rad/s

(-ve SIGN shows angular retarding acceleration)

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A wheel is making 600 rpm. Find the time taken by it to come to rest with retardation  rad/sec2

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