WorksheetsAngular
Total questions: 15
Worksheet time: 15mins
A rope swing is 3 meters long and is rotating at 90 deg/s. what's the centripetal acceleration?
7.4 m/s/s
2700 m/s/s
270 m/s/s
4.7 m/s/s
I'm confused
Michael Jordan performs a 360 dunk with an air time of 0.9 seconds. When he lands, it takes him 0.2 seconds to come to a stop. What was his angular acceleration during landing?
2000 deg/s/s (-)
360 deg/s/s (-)
400 deg/s/s (-)
80 deg/s/s (-)
72 deg/s/s (-)
A quarterback's arm is 0.8 meters long and rotating at 4 rad/s at release. How fast is the ball moving?
5 m/s
3.2 m/s
20 m/s
183 m/s
None of the above
If I wanted to throw a baseball 44.7 m/s (100mph) with an arm that is 0.7 m long, how fast would I have to rotate?
64 deg/s
64 m/s
64 rad/s
31 deg/s
31 rad/s
If tangential acceleration is -6 m/s/s and the radius of the object is 2.5, what's the angular acceleration?
6 deg/s/s (-)
4 deg/s/s (-)
2.4 rad/s/s (-)
2.4 deg/s/s (-)
2.5 rad/s/s (-)
A 0.12-m-radius grinding wheel takes 5.5 s to speed up from 2.0 rad/s to 11.0 rad/s. What is the wheel's average angular acceleration?
9.6 rad/s/s
4.8 rad/s/s
3.1 rad/s/s
1.6 rad/s/s
The angular velocity is represented by the Greek letter ____.
ω
θ
α
σ
The angular acceleration is represented by the Greek letter ____.
ω
θ
α
σ
The relationship between angular acceleration and linear acceleration is _________
α = a/r
a = α/r
α =ar
a = αr
A Ferris wheel starts at rest and builds up to a final angular speed of 0.70 rad/s while rotating through an angular displacement of 4.9 rad. What is its average angular acceleration?
0.01 rad/s/s
0.05 rad/s/s
1.8 rad/s/s
2.6 rad/s/s
Which has greater angular 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 - they both have the same angular speed
To convert between linear velocity and angular velocity you used ___________.
r =vω
ω = vr
ω=r/v
v =rω
A disk with a radius of 0.5 meters is rotating at an angular velocity of 10 rad/s. What is the linear velocity of a point on the edge of the disk?
5 m/s
10 m/s
15 m/s
20 m/s
A figure skater is spinning with an angular velocity of 6 rad/s. If she pulls her arms in and reduces her moment of inertia to half, what will be her new angular velocity?
3 rad/s
6 rad/s
9 rad/s
12 rad/s
A wheel accelerates from rest at a constant angular acceleration of 2 rad/s². How long will it take to reach an angular velocity of 20 rad/s?
5 seconds
10 seconds
15 seconds
20 seconds
