Centripetal Motion Flashcard

Front

What is centripetal motion?

Back

Centripetal motion refers to the motion of an object moving in a circular path, where it is constantly changing direction due to the presence of a net inward force acting towards the center of the circle.

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 tangential speed and r is the radius of the circular path.

Front

Define the term 'period' in the context of circular motion.

Back

The period (T) is the time taken for one complete revolution around a circular path.

Front

What is the relationship between period and frequency?

Back

Frequency (f) is the reciprocal of the period: f = 1/T. It represents the number of complete revolutions per second.

Front

How do you calculate the frequency if the period is known?

Back

Frequency (f) can be calculated using the formula: f = 1/T, where T is the period in seconds.

Front

What is the unit of frequency?

Back

The unit of frequency is Hertz (Hz), which is equivalent to one cycle per second.

Front

What is the direction of the instantaneous (tangential) velocity in circular motion?

Back

The instantaneous (tangential) velocity is always directed tangent to the circular path at the object's position.

Front

What is the role of centripetal force in circular motion?

Back

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

Front

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

Back

If the speed of the object increases, the centripetal acceleration increases, as it is proportional to the square of the speed (a_c = v^2 / r).

Front

What is the formula to convert rotations per minute (rot/min) to frequency in Hertz?

Back

To convert rotations per minute to frequency in Hertz, use the formula: f (Hz) = (rot/min) / 60.