Circular Motion

This means that the speed of the object remains constant but the velocity of the object changes.

• Linear Motion

• Circular Motion

• Uniform Circular Motion

It is an inward force which means that is directed towards the center of the circle.

• centripetal

• centrifugal

• balanced

This force appears on the mass of the object.

• centripetal

• centrifugal

• balanced

Which of the following is NOT an example of uniform circular motion?

• riding in a merry-go-round

• hammer throwing

• electricity flowing

What is the mathematical formula in finding centripetal force?

• $F\ =\ \frac{vm^2}{r}$

• $F\ =\ \frac{mv^2}{r}$

• $F\ =\ \frac{mv^2}{r^2}$

What is the representation of blue line in this illustration?

• radius

• diameter

• tangent

What will be the formula if you are finding the radius using uniform circular motion mathematical equation?

• $r\ =\ mv^2$

• $r=\frac{mv^2}{F}$

• $r=\frac{mv^2}{F^2}$

Henry is riding on a merry-go-round of radius 2.0 m which is moving at a constant speed of 1.5 m/s. What is the force acting on Henry's body if his mass is 75 kg?

• 84.375 N

• 337.5 N

• 170.75 N

A 1, 450 kg racing car is moving at a constant speed of 115 m/s on a circular track. What will be the radius of the track if the force acting on the car to move in uniform circular motion is found to be 38, 125 N?

• 4.373 N

• 502.98 N

• 504 N

The tub of a clothes dryer is spinning at a constant speed of 2m/s. The diameter of the tub is 3m. What is the net force acting on the tub if its mass is 2.25 kg?

• 6 N

• 3 N

• 5 N