Circular Motion

Front

What is circular motion?

Back

Circular motion is the motion of an object that revolves around a fixed point or axis in a circular path.

Front

What is the formula for calculating the speed of an object in circular motion?

Back

Speed (v) = Distance (d) / Time (t). For circular motion, v = 2πr / T, where r is the radius and T is the period.

Front

Define centripetal force.

Back

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

Front

What is the unit of centripetal force?

Back

Newton (N).

Front

How do you calculate centripetal acceleration?

Back

Centripetal acceleration (a_c) = v² / r, where v is the speed and r is the radius.

Front

What is the relationship between period and frequency in circular motion?

Back

Frequency (f) is the reciprocal of the period (T): f = 1/T.

Front

What is the formula for calculating the velocity of an object in circular motion given radius and acceleration?

Back

Velocity (v) = √(a_c * r), where a_c is centripetal acceleration and r is the radius.

Front

What is the direction of the velocity vector in circular motion?

Back

The velocity vector is tangent to the circular path at any point.

Front

What is the direction of the acceleration vector in uniform circular motion?

Back

The acceleration vector is directed towards the center of the circle.

Front

How does mass affect centripetal force?

Back

Centripetal force (F_c) is directly proportional to mass (m): F_c = m * a_c.