Rotational

What does this formula measure?

• moment of inertia

• impulse

• electric current

• angular momentum

According to the Law of Conservation of Angular Momentum, if I (momentum of inertia) increases, what will happen to ω?

• Decrease

• Stay the same

• Increase

Analogue of mass in rotational motion is

• moment of inertia

• radius of gyration

• torque

• angular momentum

Determine the linear velocity of the tips of the blades in meters per second for a ceiling fan with 50 cm blades rotating at 45 rpm.

• 2.4 m/s

• 2300 m/s

• 8500 m/s

• 240 m/s

Tags

NGSS.MS-PS3-1

Which has more rotational inertia? (consider all objects have equal radius)

• Hollow sphere

• solid sphere

• cylindrical shell

• solid cylinder

Which has greater linear speed, a horse near the outside rail of a merry-go-round or a horse near the inside rail?

• the inside horse

• the outside horse

• Neither

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

In order to do a lot of flips an Olympic diver would want:

• high rotational inertia

• low rotational inertia

• low linear acceleration

• low angular velocity

Why are you more stable when riding a bicycle at a faster speed?

• You have more mass

• The wheels have angular momentum

• It's not easier to ride at a faster speed

• The bike has more momentum

Tags

NGSS.MS-PS3-1

A cave dweller rotates a pebble in a sling with a radius of 0.30 m clockwise through an arc length of 0.96 m. What is the angular displacement of the pebble?

• 1.6 rad

• -1.6 rad

• 3.2 rad

• -3.2 rad

Does a bridge anchored resting on two pillars have any torque?

• No, it isn't moving

• Yes, but it is at equilibrium

• Yes, but it will soon break because of the torque

• No, Bridges can't have torque

Tags

NGSS.HS-PS2-1