chp 10 circular motion flashcardizz review

Front

What is tangential speed?

Back

Tangential speed is the linear speed of an object moving along a circular path, measured at a point tangent to the circle.

Front

Is tangential speed zero at the axis of rotation?

Back

True. At the axis of rotation, the tangential speed is zero because the distance from the axis is zero.

Front

How is tangential speed related to rotational speed?

Back

Tangential speed is directly proportional to rotational speed; as rotational speed increases, tangential speed increases.

Front

What is the formula for centripetal force?

Back

Fc = mv²/r, where Fc is the centripetal force, m is mass, v is tangential speed, and r is the radius of the circular path.

Front

Calculate the centripetal force for a 60 Kg ice skater moving at 5 m/s on a 6 m rope.

Back

Fc = mv²/r = (60 kg)(5 m/s)² / 6 m = 250 N.

Front

What is centrifugal force?

Back

Centrifugal force is an apparent force that acts outward on a body moving in a circular path, perceived in a rotating reference frame.

Front

Is centrifugal force a true force?

Back

False. Centrifugal force is not a true force; it is a result of inertia in a rotating frame.

Front

What happens to centripetal force if the radius of the circular path increases?

Back

If the radius increases while keeping mass and speed constant, the centripetal force decreases.

Front

What is the effect of increasing mass on centripetal force?

Back

Increasing mass while keeping speed and radius constant increases the centripetal force.

Front

Calculate the tension in a 2 m string whirling a 1 Kg mass at 2 m/s.

Back

Fc = mv²/r = (1 kg)(2 m/s)² / 2 m = 2 N.