Uniform Circular Motion Review

Front

What is Uniform Circular Motion?

Back

Uniform Circular Motion is the motion of an object traveling at a constant speed in a circular path.

Front

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

Back

Velocity (v) = Circumference / Time = (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 relationship between Centripetal Force and mass?

Back

Centripetal Force (Fc) is directly proportional to the mass (m) of the object and the square of its velocity (v): Fc = mv²/r.

Front

What role does friction play in circular motion?

Back

Friction provides the necessary centripetal force to keep an object moving in a circular path.

Front

How do you calculate the period of an object in circular motion?

Back

Period (T) = Time taken for one complete revolution.

Front

What is the formula for calculating the gravitational force?

Back

Gravitational Force (Fg) = G * (m1 * m2) / r², where G is the gravitational constant, m1 and m2 are the masses, and r is the distance between their centers.

Front

If a runner completes a lap in 22 seconds on a 50 m radius track, what is their velocity?

Back

Velocity = Circumference / Time = (2π * 50 m) / 22 s ≈ 14.3 m/s.

Front

What is the period of a yoyo making 12 revolutions in 4 seconds?

Back

Period = Total time / Number of revolutions = 4 s / 12 ≈ 0.33 s.

Front

In which direction does the Centripetal Force act?

Back

Centripetal Force always acts towards the center of the circular path.