An object at rest (with no additional forces) on an inclined plane has the following forces:
A normal force, which is equal and opposite to _______
A frictional force, which is equal and opposite to _________
Other Answer Choices:
F⊥
F//
Fg (force of gravity)
Fnet
Question 7
7.
Question 8
8.
Question 9
9.
Question 10
10.
Question 11
11.
Question 12
12.
Question 13
13.
Question 14
14.
Question 15
15.
The amount of matter the object contains
gravitational force
weight
density
mass
An object with a mass of 5 kg rests on a plane inclined 30º from horizontal. What is the component of the weight force that is parallel to the incline?
4,33 N
5,0 N
24,5 N
42,44 N
53,18 N
Given static and kinetic friction between two surfaces, which has a greater value? Why?
The static friction has a greater value because the friction between the two surfaces is more when the two surfaces are in relative motion.
The kinetic friction has a greater value because the friction between the two surfaces is more when the two surfaces are in relative motion.
The static friction has a greater value because the friction between the two surfaces is less when the two surfaces are in relative motion.
The kinetic friction has a greater value because the friction between the two surfaces is less when the two surfaces are in relative motion.
A 40 kg crate is being pushed horizontally across a floor. Its coefficient of kinetic friction is 0,4. What is the kinetic frictional force acting on the crate?
98 N
40 N
16 N
392 N
156,8 N
When the mass of an object increases then gravity (g) ....
increases
decreases
remains the same
Friction acts:
only when an object is in motion
regardless of whether an object is moving or not
on stationary objects only
How would the absence of friction affect a marble traveling on a long, straight path?
The marble’s speed would increase
The marble’s speed would decrease
The marble would remain at a constant speed
The marble would stop immediately
How do you lower the friction force on a crate which is moving?
Use a smooth surface
By pushing down
By not pushing hard
Use a rough surface
How do you lower the friction force on a crate which is NOT moving?
By pushing down
By not pushing hard
Name the missing force...
tension force
normal force
frictional force
Name the missing force...
tension force
applied force
frictional force
Which diagram best shows person pushing a couch (accelerating) across the floor?
Which diagram best shows person pushing a couch (at constant velocity) across the floor?