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Question

What is the angular velocity in rad/s of a wheel making 1200 revolutions in 50 minutes ?

A
0.3 π
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B
0.5 π
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C
0.4 π
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D
0.8 π
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Solution

The correct option is D 0.8 π
We know that,
Since 1 revolution corresponds to 2 π rad

ω=(1200×2π)(50×60)=4π5=0.8 π rad/s
Hence option (d) is correct

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