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A fan is rotating with a speed of 450 re...

A fan is rotating with a speed of 450 rec/minute. Afer being switched off it comes to rest in 10s. Assuming constant angular deceleration, calculate the number of recvolutions made by it before coming to rest.

A

37.5

B

37

C

38.5

D

None

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • The motor of an engine is rotating about its axis with an angular velcoity of 100 rev me^(-1) . It comes to rest is 15 s, after being switched off. Assuming constant angualar decelearation . What are the numbers of revolutions made by it befor coming to rest ?

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