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WorksheetsMechanics up to Intro Rotation
Total questions: 58
Worksheet time: 36mins
Rank the total energies at the three locations (A, B, and, C) from greatest to least.
A > B > C
C > B > A
A > C > B
A = B = C
Rank the gravitational potential energies at the three locations (A, B, and, C) from greatest to least.
A > B > C
C > B > A
A > C > B
A = B = C
Rank the gravitational kinetic energies at the three locations (A, B, and, C) from greatest to least.
A > B > C
C > B > A
A > C > B
A = B = C
When force and distance are in the same direction...
Negative work is done and energy increases
Negative work is done and energy decreases
Positive work is done and energy increases
Positive work is done and energy decreases
When force and distance are in opposite directions...
Negative work is done and energy increases
Negative work is done and energy decreases
Positive work is done and energy increases
Positive work is done and energy decreases
When you toss a ball up in the air which of the following is true?
The potential energy increases on the way up
Kinetic energy increases on the way up
The force of gravity does positive work on the object on the way up
Impossible to tell without knowing the mass of the ball
Which of the following is not considered mechanical energy?
Kinetic Energy
Electrical Energy
Potential Energy
If energy cannot be created or destroyed, what can it do
It can only stay in the state that it is for eternity
Energy can change form
The conservation of energy states
Energy can be lost
Energy is conserved
Energy can be created
In order to move in a circle, what is required?
A tangential force
An outward force
A force towards the center
Nothing, objects "like" to travel in circles
Which of the following is not one of Newton's 3 laws?
For every action force there is an equal an opposite reaction force
ΣF = ma
What goes up must come down
An object at rest or in motion will stay at rest or in motion
What information can you get from a velocity vs time graph?
Velocity from reading, displacement from slope, and acceleration from area
Velocity from slope, displacement from reading, and acceleration from area
Velocity from reading, displacement from area, and acceleration from slope
The mass from the area, and the energy from the slope
When a projectile is launched, the force of gravity is the only force acting on the object while in flight, the direction of the net force is
In the direction of the object's motion
Down
Up and right
Down and left
The vertical velocity of a projectile at the apex (highest location) is...
The same as the velocity it was launched at, just the opposite direction now
Zero
Ten and down
Depends on how fast the object was launched
Solve for v (5)(10)(5) = (21)(5)(v2)
√20
5
10
100
Select the description that best represents the motion shown in the graph
Object moving backwards with a constant velocity
Object moving forwards slowing down
Object moving forwards with a constant velocity
Object moving backwards slowing down
Select the description that best represents the motion shown in the graph
Object moving backwards with a constant velocity
Object moving forwards speeding up
Object moving forwards with a constant velocity
Object moving backwards slowing down
How long will it take an object 45 meters off of the ground to hit the ground if dropped from rest? (there is a shortcut formula)
9 seconds
4.5 seconds
3 seconds
45 seconds
What is the kinetic energy of an object that is travelling 10 m/s and has mass of 10 kg
100 Joules
1000 Joules
500 Joules
10 Joules
The gravitational potential of an 4 kg object is observed to be 80 Joules, how high off of the ground is it?
8 meters
4 meters
2 meters
1 meter
As you stretch a spring, the amount of stored energy...
Increases
Decreases
Stays the same
Each square has a side of one unit, the solid black line indicates the path taken, what is the displacement of the object from A to B?
5
13
20
If the graph to the left shows position vs time, the acceleration is...
Positive
Negative
Zero
If the net force on an object increases, then the acceleration will .... (mass is held constant)
Increase
Decrease
Stays the same
Not enough information
An object in motion or at rest will maintain their present state until...
Eternity
Two balanced forces act on it
An unbalanced force acts on it
Depends on the mass
For every action force, there is ...
An unequal reaction force
An equal and opposite reaction force
A butterfly that flaps its wings in Nepal
Which mass will accelerate the most?
M
2M
4M
They all accelerate the same amount
Which way will M accelerate?
Up
Down
Not enough information
It doesn't accelerate
What is the force of gravity on a 30 kg object?
3 N
30 N
300 N
10 N
Of the forces acting on M, the mass on the left, is the force of tension greater or is the force of gravity greater?
They are equal
Force of Gravity
Force of Tension
Impossible to tell with the information provided
The vertical velocity of a projectile at the apex (highest location) is...
The same as the velocity it was launched at, just the opposite direction now
Zero
Ten and down
Depends on how fast the object was launched
Rank the magnitudes of change in momentum from greatest to least
Rank the magnitude of the change in momentum of the cars from greatest to least
Rank the impulse (change in momentum) applied to the box using the graph shown
2 - 4 sec
4 - 6 sec
0 - 2 sec
6 - 8 sec
8 - 10 sec
When the mass is released, at which locations will it be moving the fastest?
- x max
x max
x = 0
Some other place
When the mass is released, at which locations will it the object have the greatest amount of kinetic energy?
- x max
x max
x = 0
Some other place
When the mass is released, at which locations will it the object have the greatest acceleration?
- x max
x max
x = 0
Some other place
When the mass is released, at which locations will it the object have the greatest elastic potential energy?
- x max
x max
x = 0
Some other place
When the mass is released, at which locations will it the object experience the greatest magnitude of force?
- x max
x max
x = 0
Some other place
When the mass is released, what changes would increase the period of motion?
Increasing x max
Decreasing x max
Increasing the spring constant
Decreasing the spring constant
Increasing the mass of the object
In a pendulum, which statement would give you the max height using the string and the angle measured at its amplitude
L - L tan theta
L - L sin theta
L - L cos theta
L - L cot theta
If give an function v(t), what could be done to get x(t)
Plug and chug
take the derivative
take the integral
multiply by 2 and square root
If give an function x(t), what could be done to get v(t)
Plug and chug
take the derivative
take the integral
multiply by 2 and square root
If give an function v(t), what could be done to get a(t)
Plug and chug
take the derivative
take the integral
multiply by 2 and square root
If give an function F(x) what could be done to get work
Plug and chug
take the derivative
take the integral
multiply by 2 and square root
If give an function F(t) what could be done to get impulse (change in momentum)
Plug and chug
take the derivative
take the integral
multiply by 2 and square root
If an oscillating object has a cosine curve for x(t), what would v(t) look like
+sine
-sine
+cosine
-cosine
Linear
If an oscillating object has a sine curve for x(t), what would v(t) look like
+sine
-sine
+cosine
-cosine
Linear
If an oscillating object has a cosine curve for a(t), what would v(t) look like
+sine
-sine
+cosine
-cosine
Linear
In all collisions, which is/are true
momentum is conserved
each object experiences an equal and opposite force
the momentum one object gains is equivalent to the momentum a object loses
energy is conserved
Both objects experience the force for the same amount of time
A solid sphere and a hollow sphere start at the top of a ramp from rest, if both are released at the same time and do no slip, which will make it to the bottom of the ramp first?
Solid Sphere
Hollow Sphere
Tie
Depends on the mass and radius of each
A ring and a solid disk start at the top of a ramp from rest, if both are released at the same time and do no slip, which will make it to the bottom of the ramp first?
Ring
Solid Disk
Tie
Depends on the mass and radius of each
What is the rotational equivalent to Mass
Torque (τ)
Moment of Inertia (Ι)
Angular Displacement (Θ)
Angular Speed (ω)
What does ω equal in linear terms
(v)(r)
v(r2)
v/r
v/r2
When attempting to make an object rotate, how should the force and radius be oriented
Parallel
Perpendicular
Anti-parallel
30⁰
Rank the following from greatest to least Moments of Inertia
Rank from greatest to least
A
C
B
D
Six identical massless rods are supported by a fulcrum and are tilted at the same angle to the horizontal. A mass is suspended from the left end of the rod, and the rods are held motionless by a downward force on the right end. Each rod is marked at 1-m intervals.
Rank the vertical force (F) applied to the end of the rod
