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WorksheetsInclined planes
Total questions: 10
Worksheet time: 2hrs 32mins
Name
Class
Date
1.
If an object is at rest on an inclined plane, which of the following forces is greatest?
a)
Normal Force
b)
Friction
c)
Weight
d)
Both Normal Force and Weight are equal, so they both are the greatest.
2.
A box weighing 46 newtons rests on an incline that makes an angle of 25° with the horizontal. What is the magnitude of the component of the box’s weight perpendicular to the incline?
a)
19N
b)
21N
c)
42N
d)
26N
3.
An 8.0-newton block is accelerating down a frictionless ramp inclined at 15° to the horizontal. What is the magnitude of the net force causing the block’s acceleration?
a)
0N
b)
2.1N
c)
7.7N
d)
8.0N
4.
A 10.0-kilogram mass held at rest on a frictionless 30.0º incline by force F. What is the magnitude of force F?
a)
49.1N
b)
98.1N
c)
85N
d)
9.81N
5.
Which of the following is the best expression for the Normal Force?
a)
FN = mg cos(ϴ)
b)
FN = mg sin(ϴ)
c)
FN = mg sin(180-ϴ)
d)
FN = mg cos(90-ϴ)
6.
Which of the following is the best expression for the Normal Force?
a)
FN = mg cos(ϴ)
b)
FN = mg sin(ϴ)
c)
FN = mg sin(180-ϴ)
d)
FN = mg cos(90-ϴ)
7.
If there is no friction, then the acceleration would be equal to
a)
mg
b)
sin(θ)mg
c)
g
d)
sin(θ)g
8.
A 3.0-kg block slides on a frictionless 20° inclined plane. A force of 16 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?
a)
2 m/s^2 down the incline
b)
5.3 m/s^2 up the incline
c)
2 m/s^2 up the incline
d)
3.9 m/s^2 down the incline
9.
A 20.0-kilogram mass held at rest on a frictionless 25.0º incline by force F. What is the magnitude of force F?
a)
49.1N
b)
98.1N
c)
83N
d)
9.81N
10.
An 8.0-newton block is accelerating down a frictionless ramp inclined at 15° to the horizontal. What is the magnitude of the net force causing the block’s acceleration?
a)
0N
b)
2.1N
c)
7.7N
d)
8.0N
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