AP Physics 1 Rotation

Front

What is the moment of inertia (I) of a solid sphere?

Back

I = (2/5)mr², where m is mass and r is radius.

Front

What is the formula for linear speed (v) of a rolling object down a ramp from height (h)?

Back

v = √(2gh/(1 + (I/mr²))) for a solid sphere, v = √(5gh/7) when I = (2/5)mr².

Front

What is rotational speed?

Back

Rotational speed is the number of rotations or revolutions per unit time, typically measured in revolutions per minute (RPM) or radians per second.

Front

Which unit is NOT a unit of rotational speed?

Back

Meters per second.

Front

What is the relationship between linear speed and rotational speed?

Back

Linear speed (v) = radius (r) × angular speed (ω).

Front

How do you calculate average angular acceleration (α)?

Back

α = (final angular velocity - initial angular velocity) / time.

Front

What is the average angular acceleration of a wheel that speeds up from 2.0 rad/s to 11.0 rad/s in 5.5 seconds?

Back

1.6 rad/s².

Front

What is the linear velocity of an object on a rotating turntable?

Back

Linear velocity (v) = radius (r) × angular velocity (ω).

Front

If two objects are on a rotating turntable, how does their speed compare?

Back

The object further from the center has a greater linear speed.

Front

What is the difference between rotational speed and linear speed?

Back

Rotational speed refers to how fast an object rotates, while linear speed refers to how fast an object moves along a path.