Uniform Circular Motion (HSC SSCE Physics): Quizzes

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Uniform Circular Motion
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What must act on an object moving at constant speed around a curve?

A net force

What is uniform circular motion?

Motion along a circular path at constant speed

If an object completes one circle of radius rr in time TT, what is its speed?

v=2πrTv = \frac{2\pi r}{T}

In which direction does velocity point during circular motion?

Tangent to the circle

In which direction does centripetal acceleration point?

Toward the centre of the circle

What is the magnitude of centripetal acceleration?

ac=v2ra_c = \frac{v^2}{r}

What is the formula for centripetal force?

Fc=mv2rF_c = \frac{mv^2}{r}

What is centripetal force?

The vector sum of all forces on the object

What are the units of angular displacement?

Radians

How are angular velocity ω\omega and linear velocity vv related?

v=ωrv = \omega r

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