Rotational Velocity & Acceleration Video Lessons

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Problem: In uniform circular motion, which of the following are constant:Check all that apply.a) the speed is constantb) the magnitude of the velocity is constantc) the direction of the velocity is constantd) the magnitude of the angular velocity is constante) the magnitude of the centripetal acceleration is constantf) the magnitude of the net force is constantg) the direction of the angular velocity is constanth) the direction of the centripetal acceleration is constanti) the direction of the net force is constant

FREE Expert Solution

Uniform circular motion is characterized by an object moving round the circumference of a circle at a constant speed. 

However, the direction of the velocity is constantly changing.

Also, centripetal acceleration is always towards the center, so direction changes constantly. 

Centripetal acceleration has the same direction as the net force in UCM.

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Problem Details

In uniform circular motion, which of the following are constant:

Check all that apply.

a) the speed is constant

b) the magnitude of the velocity is constant

c) the direction of the velocity is constant

d) the magnitude of the angular velocity is constant

e) the magnitude of the centripetal acceleration is constant

f) the magnitude of the net force is constant

g) the direction of the angular velocity is constant

h) the direction of the centripetal acceleration is constant

i) the direction of the net force is constant

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