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WorksheetsTorque/Rotation
Total questions: 22
Worksheet time: 23mins
Name
Class
Date
1.
An see saw in rotational equilibrium (balanced torque) must have the same amount of weight on each side.
a)
True
b)
False
2.
A rusty bolt is hard to get turned. What could be done to help get the bolt turned?
a)
increase the lever arm
b)
decrease the force
c)
apply the force at a 30 degree angle
3.
Describes an object's resistance to changes in rotation
a)
mass
b)
lever arm
c)
rotational inertia
d)
torque
4.
The rotational version of force
a)
alpha
b)
moment of inertia
c)
lever arm
d)
torque
5.
The rotational version of mass is
a)
alpha
b)
moment of inertia
c)
lever arm
d)
torque
6.
"a" is to translation as ____ is to rotation
a)
α
b)
ω
c)
θ
d)
τ
7.
"v" is to translation as ____ is to rotation
a)
α
b)
ω
c)
θ
d)
τ
8.
"x" is to translation as ____ is to rotation
a)
α
b)
ω
c)
θ
d)
τ
9.
This variable tells us how fast an object rotates
a)
ω
b)
θ
c)
Δx
d)
v
10.
Which variable tells us rotational displacement?
a)
Δx
b)
∆θ
c)
α
d)
∆ω
11.
To provide a torque, an applied force must have a component:
a)
parallel to the lever arm
b)
perpendicular to the lever arm
c)
perpendicular to the pivot point
d)
none of the above
12.
If two objects have the same angular acceleration, the object with the smaller moment of inertia has the greater net torque.
a)
True
b)
False
13.
Angular acceleration is caused by a torque acting on a rigid object.
a)
Newton’s first law of motion
b)
Newton’s second law of motion
c)
Newton’s third law of motion
14.
When an object is experiencing a net torque
a)
it is in dynamic equilibrium.
b)
it is in static equilibrium.
c)
it is rotating.
d)
it is translating.
15.
Which has greater linear speed, a horse near the outside rail of a merry-go-round or a horse near the inside rail?
a)
the inside horse
b)
the outside horse
c)
Neither
16.
Which has greater angular speed, a horse near the outside rail of a merry-go-round or a horse near the inside rail?
a)
The inside horse
b)
The outside horse
c)
Neither - they both have the same angular speed
17.
Which of the following is NOT a unit of rotational speed?
a)
Meters per second
b)
Revolutions per minute
c)
Revolutions per second
d)
Rotations per second
18.
Calculate an object's angular acceleration if it had an angular speed of 10 rad/s and 2 s later has an angular speed of 12 rad/s.
a)
1 rad/s2
b)
1 m/s2
c)
2 rad/s2
d)
5 rad/s2
19.
A wheel moves through 12.0 rad in 3.00 s. What is the wheel's angular acceleration if its initial angular speed is 1.0 rad/s
a)
1.0 rad/s2
b)
2.0 rad/s2
c)
3.0 rad/s2
d)
1 rad
20.
A remote controlled car's wheel accelerates at 20.0 rad/s2. If it starts with an angular speed of 2.00 rad/s what is the angular speed after 10.0 rad?
a)
12.0 rad/s
b)
12.0 m/s
c)
20.0 rad/s
d)
20.0 rad
21.
Find the at of a person standing 5.00 m from the center of a spinning ride that has an angular acceleration of 0. 250 rad/s2
a)
20 rad/s2
b)
20 m/s2
c)
1.25 m/s2
d)
0.05 m/s2
22.
Torque is the product of a force exerted on an object times the lever arm.
a)
True
b)
False
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