Circle motion and Torque

What is Circular Motion?

Movement of an object along a curved or circular path.

What is Circular Motion also known as?

Rotational motion or angular motion.

How does centripetal force work?

It pulls an object toward the center of the circle, constantly changing its direction.

What is an example of centripetal motion?

A ball on a string, a car turning, or the moon orbiting Earth.

What is Net Force?

The total force acting on an object after all forces are combined.

What is Uniform Circular Motion?

Movement in a circle at constant speed but constantly changing direction.

What is Centrifugal Force?

A fake outward force caused by inertia; not a real force.

What happens if the centripetal force decreases or disappears?

The object moves in a straight line tangent to the circle.

How do centrifugal and centripetal forces differ?

Centripetal pulls inward and is real; centrifugal feels outward and is not a real force.

Why do roller coasters have constant speed but changing velocity?

Velocity changes because direction changes, even when speed stays the same.

How do you calculate the speed of an object moving in a circle?

v = \frac{2\pi r}{T}

What is the period of a circle?

The time it takes to complete one full revolution.

What is Torque?

A measure of how effectively a force causes rotation around a pivot.

What are the three factors that affect torque?

Force, distance from pivot, angle of force.

Solving for torque formula

\tau = rF

Units of torque

Newton-meters (N\cdot m)

What are the two components of torque?

Tangential component (causes rotation) and radial component (does not cause rotation).

What direction of rotation is positive?

Counterclockwise (CCW)

What direction of rotation is negative?

Clockwise (CW)