Circular Motion

Front

What is centripetal force?

Back

Centripetal force is the force that acts on an object moving in a circular path, directed towards the center of the circle.

Front

What is the direction of the velocity of an object in circular motion?

Back

The velocity of an object in circular motion is always tangent to the circle at the object's position.

Front

Define frequency in the context of circular motion.

Back

Frequency is defined as the number of revolutions per second.

Front

What does 'centripetal' mean?

Back

Centripetal means 'center seeking', referring to the force that keeps an object moving in a circular path.

Front

How long does it take for the Earth to make one complete revolution around the Sun?

Back

It takes approximately 365 and 1/4 days for the Earth to complete one revolution around the Sun.

Front

What is the formula for centripetal acceleration?

Back

Centripetal acceleration (a_c) is given by the formula a_c = v^2 / r, where v is the linear velocity and r is the radius of the circular path.

Front

What is the relationship between period and frequency?

Back

The period (T) is the reciprocal of frequency (f), expressed as T = 1/f.

Front

What is the role of centripetal force in circular motion?

Back

Centripetal force is necessary to keep an object moving in a circular path, preventing it from flying off in a straight line.

Front

What happens to the centripetal force if the speed of the object increases?

Back

If the speed of the object increases, the centripetal force must also increase to maintain circular motion.

Front

What is the effect of increasing the radius of the circular path on centripetal acceleration?

Back

Increasing the radius of the circular path decreases the centripetal acceleration for a constant speed.