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WorksheetsFormative Assessment Topic 8
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
A body with a definite shape that doesn't change is:
a)
period
b)
angular acceleration
c)
rigid body
d)
radius of gyration
2.
The number of complete revolutions per second is:
a)
frequency
b)
period
c)
torque
d)
rotational inertia
3.
__________ (ω)– the rate at which a body rotates about an axis (radians per second)
a)
linear speed
b)
rotational speed
c)
angular speed
d)
velocity
4.
The product of the force times the lever arm; the movement of the force about the axis is:
a)
torque
b)
lever arm
c)
rotational inertia
d)
angular momentum
5.
If a system is in static equilibrium, it must have the following 2 conditions:
a)
∑τ=0
b)
Constant acceleration
c)
∑F=0
d)
Positive forces only
6.
The formula used to find a torque is...
a)
(m)(g)
b)
(F) cos(Ɵ)
c)
(F)(r)
d)
(m)(a)
7.
The easiest way to open a heavy door is by applying the force
a)
Near the hinges
b)
In the middle of the door
c)
At the edge of the door far from the hinges
d)
At the top of the door
8.
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
9.
What does this formula measure?
a)
moment of inertia
b)
impulse
c)
electric current
d)
angular momentum
10.
A person sits on a freely spinning lab stool that has no friction in its axle. When this person extends her arms,
a)
her moment of inertia increases and her angular speed decreases.
b)
her moment of inertia decreases and her angular speed increases.
c)
her moment of inertia increases and her angular speed increases.
d)
her moment of inertia increases and her angular speed remains the same.
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