WorksheetsShort Quiz (Rotation of Rigid Body)
Total questions: 10
Worksheet time: 3mins
Which of the following is true about a rotating rigid body?
Its center of rotation is at rest
The center of rotation is at the center of mass
All points on the body are moving with the same linear velocity
Every points in the body are moving with the same angular velocity
How many radians make up one revolution of 360 degrees?
π/2
π
2π
3π/2
Which of the following is NOT a unit of rotational speed?
meters per second
revolutions per minute
revolutions per second
radian per second
The formula used to find a torque is...
mg
F r cos θ
F r sin θ
ma
When the object tends to rotate in a clockwise rotation, the torque is...
Positive
Negative
The value of torque depends on the rotation axis and the...
Magnitude of applied force
Mass of object
Moment of inertia of object
Shape of object
A line on which the center of circle lie is called...
Lever arm
Angular momentum
Period
Axis of rotation
The easiest way to open a heavy door is by applying the force...
Near the hinges
In the middle of the door
At the edge of the door far from the hinges
At the top of the door
Conditions for equilibrium are...
∑τ = Iα and ∑F = ma
∑τ = 0
τ = F r sin θ
∑τ = 0 and ∑F = 0
Constant acceleration
A construction worker is worried about applying too much torque to a bolt using his wrench. What could he do to reduce his torque on the bolt?
Increase the length of the wrench
Increase the force on wrench
Reduce the length of the wrench
Reduce the friction between the bolt and wrench
