SOLUTION: A bicycle, whose wheel diameter equals 90 cm, is moving with a speed of 25 km per hour. Calculate its angular speed in seconds. (Show your calculations).
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Question 1136817: A bicycle, whose wheel diameter equals 90 cm, is moving with a speed of 25 km per hour. Calculate its angular speed in seconds. (Show your calculations). Answer by ikleyn(52794) (Show Source):
25 km per hour = meters per second = 6.94444... m/s.
To find angular speed, use the equation
= 6.9444.
where r = 0.45 meters is the radius of the wheel.
Then = = 15.43 radians per second. ANSWER
If you want to know how many full rotations is it, divide 15.43 radians by 6.28 radians :
= = 2.47 full rotations.
