Worksheetsinclined planes
Total questions: 10
Worksheet time: 2hrs 16mins
Name
Class
Date
1.
What direction does friction act relative to motion?
a)
in the same direction
b)
in the opposite direction
c)
need more information
d)
depends on the force
2.
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)
3.
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
4.
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 (parallel to the ramp)?
a)
0N
b)
2.1N
c)
7.7N
d)
8.0N
5.
A 1.0 × 105-newton truck at rest on a hill that makes an angle of 8.0° with the horizontal. What is the component of the truck’s weight parallel to the hill?
a)
1.4E3N
b)
1E4N
c)
1.4E4N
d)
9.9E4N
6.
A cart rolls down an inclined plane with constant speed as shown in the diagram below. Which arrow represents the direction of frictional force?
a)
A
b)
B
c)
C
d)
D
7.
A 10.-newton block is sliding down a 30-degree incline at a constant speed. What is the force of friction?
a)
5N
b)
4.9N
c)
10N
d)
98N
8.
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
9.
If there is no friction, then the acceleration would be equal to
a)
mg
b)
sin(θ)mg
c)
g
d)
sin(θ)g
10.
a 43 kg box is on a 32 degree inclined plane with a friction coefficient of .23 What is the Fnet
(a)
100 %
