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).

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(52797) (Show Source): You can put this solution on YOUR website!
.

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.

Answered and solved.

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