Circular Motion

Front

What is defined as the number of revolutions (cycles/rotations) completed in one second?

Back

Frequency

Front

What is the term for the time taken for one complete circuit in circular motion?

Back

Period

Front

If an object is spinning around on a string and the string is suddenly cut, in what direction will the object move?

Back

Straight line

Front

What is the direction of centripetal acceleration for an object moving in a circular path?

Back

Towards the centre

Front

What is the formula for centripetal acceleration?

Back

a_c = v^2 / r, where v is the speed and r is the radius.

Front

What is the relationship between frequency and period?

Back

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

Front

What is angular velocity?

Back

Angular velocity is the rate of change of angular displacement and is measured in radians per second.

Front

What is the unit of frequency?

Back

Hertz (Hz), which is equivalent to cycles per second.

Front

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

Back

The centripetal force increases as it is proportional to the square of the speed.

Front

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

Back

Increasing the radius decreases the centripetal acceleration for a constant speed.