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Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

1) The angular velocity of a wheel is 70 rad/sec. If the radius of the wheel is 0.5 m, then linear velocity of the wheel is:

{answer should come 35 m/s}

2) The angular displacement of the minute hand of a clock in 20 minutes is: {answer should come radian}

3) If the frequency of a particle performing circular motion increases from 60 rpm to 180 rpm in 20 seconds, its angular acceleration is : {answer should come 0.6284 }

4) A flywheel rotates at a constant speed of 2400 rpm. The angle described by the shaft in radian in one second is : {answer should come 80 }

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1. Angular velocity ω = 70 rad /sec Rotations per second = n = ω / 2π = 35/π per sec linear velocity = distance covered in one rotation * n = 2 π 0.5 * 35 / π = 35 m/sec

2. Angular displacement of minutes hand in 20 minutes = total angle moved in one hour * 20 minutes / 60 minutes = 2 π * 20 / 60 = 2 π /3 Minutes hand circles completely in 60 minutes. so angle covered = 2π