Circular and Gravitation Test

Front

Where is the axis in an object that is revolving?

Back

The axis is located outside the object (external).

Front

What is the acceleration that is directed toward the center of the circle?

Back

Centripetal acceleration.

Front

What happens to the intensity of many quantities based on distance according to the Inverse Square Law?

Back

They propagate, meaning they decrease in intensity and increase the area they affect as they move farther away from the source.

Front

Classify the motion: The moon orbits the Earth.

Back

Circular (revolving) motion.

Front

What causes passengers to feel a force pulling them away from the turn when a car turns a corner at high speed?

Back

Inertia.

Front

Define centripetal force.

Back

A force that acts on an object moving in a circular path, directed toward the center of the circle.

Front

What is the formula for centripetal acceleration?

Back

a_c = v^2 / r, where v is the linear velocity and r is the radius of the circular path.

Front

What is the difference between centripetal and centrifugal force?

Back

Centripetal force is an actual force directed toward the center of the circle, while centrifugal force is a perceived force that appears to act outward on a mass moving in a circular path.

Front

What is the significance of the Inverse Square Law in gravitation?

Back

It states that the gravitational force between two masses decreases with the square of the distance between them.

Front

What is the definition of angular velocity?

Back

The rate of change of angular displacement with respect to time, usually measured in radians per second.