Rotational Dynamics

Multiple Choice

How many radians is 360 degrees?

• 2π

• π

• π/2

• π/4

Multiple Choice

Convert 50 degrees to radians.

• 5π rad

• 5π/18 rad

• 18π/5 rad

• insufficient data

Multiple Choice

Quick review

Same direction of ω and α results to ...

• slowing down

• speeding up

• rotating uncontrollably

• at rest

Multiple Choice

After observing the bugs rotating, which seemingly appears to be moving faster?

• ladybug

• both

• beetle

• none

Multiple Choice

62.8 rad / 5s results to

• 12.56 rad/s

• 314 rad/s

• 0.08 rad/s

• insufficient data

Multiple Choice

20.93rad/s -0 / 10s

• 2.10 rad/s^2

• 2.09 rad/s^2

• 2.09 rad/s

• insufficient data

Multiple Choice

What type of angle generates greatest torque?

• parallel

• perpendicular

• acute

• obtuse

Multiple Choice

What do you call the distance from the axis of rotation to the force applied?

• displacement

• lever arm

• distance

• radius

Multiple Choice

20 N (10m) sin 90deg is equal to?

• 200 Nm

• 200 J

• 0J

Multiple Choice

Think about this. If you were to push a semi opened door from the hinged side, will you be able to open it with ease?

• Yes

• No

• Yes with reservations

• No with reservations