If it takes 600 seconds for an object to carry out 30 revolutions what is the pe

Question

If it takes 600 seconds for an object to carry out 30 revolutions what is the period of rotation? What is the magnitude of the velocity if the object is 14 cm from the center of rotation? What is the Sentra pedal force on a 40 g mass spending 14 cm from the center of rotation at that speed? Explain what would happen if you were not to follow the safety warnings. If it takes 600 seconds for an object to carry out 30 revolutions what is the period of rotation? What is the magnitude of the velocity if the object is 14 cm from the center of rotation? What is the Sentra pedal force on a 40 g mass spending 14 cm from the center of rotation at that speed? Explain what would happen if you were not to follow the safety warnings.

Explanation / Answer

A)

Period of rotation is the time taken for one revolution which is 600/30 = 20 sec

B)

Velcoity is

w = 2pi*r / T

w = (2pi x 0.14) / 20

w = 0.044 m/s

C)

Centripetal force is

F = mv^2 / r

F = (0.040 kg x 0.044 m/s) / 0.14 m

F = 0.00055 N

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