Understanding Rotational Motion in Physics

 
Rotational Motion Review
 
Consider a point on a bicycle tire that is
momentarily in contact 
with the ground 
as the
bicycle rolls across the ground with constant
speed. The direction for the centripetal
acceleration for this point at that moment is:
1.
upward.
2.
down toward the
ground.
3.
forward.
4.
at that moment the
acceleration is zero.
A roller coaster has two loops of different radii.
Which will have the greater centripetal force?
1.
loop with greater
radius
2.
loop with smaller
radius
3.
both have the same
4.
not enough
information
The Gemini roller coaster has two cars of
differing mass.  Which will have a greater
centripetal force at the bottom of the first hill?
1.
Car with more mass
2.
Car with less mass
3.
Both have the same
4.
not enough
information
A roller coaster has two loops of different radii.
What forces provide the centripetal force at the
top of the loop
?
1.
Normal force
2.
Gravitational force
3.
Normal Force +
Gravitational Force
4.
Normal Force -
Gravitational Force
5.
Gravitational Force –
Normal Force
6.
Frictional Force
In a looped roller coaster, what force(s) provide
the centripetal force at the 
top
 of the loop at
the 
minimum speed 
needed to get over the
loop?
1.
Normal force only
2.
Gravitational force only
3.
Normal Force +
Gravitational Force
4.
Normal Force -
Gravitational Force
5.
Gravitational Force –
Normal Force
6.
Frictional Force
A roller coaster has two loops of different radii.
What forces provide the centripetal force at the
bottom
 of the loop?
1.
Normal force
2.
Gravitational force
3.
Normal Force +
Gravitational Force
4.
Normal Force -
Gravitational Force
5.
Gravitational Force –
Normal Force
6.
Frictional Force
A roller coaster has two loops of different radii.
What forces provide the centripetal force
directly to the 
left
 of the loop?
1.
Normal force
2.
Gravitational force
3.
Normal Force +
Gravitational Force
4.
Normal Force -
Gravitational Force
5.
Gravitational Force –
Normal Force
6.
Frictional Force
What gives the centripetal force that
allows a motorcycle to drive around
the inside of a cage?
1.
Frictional
2.
Gravitational
3.
Normal
4.
Tensional
5.
Applied
What gives the centripetal force that
keeps the moon revolving around the
Earth?
1.
Frictional
2.
Gravitational
3.
Normal
4.
Tensional
5.
Applied
Two adjacent lanes are curving.  If the lanes are
flat, what provides the centripetal force?
1.
 
Normal force
2.
 Gravitational force
3.
Normal Force +
Gravitational Force
4.
Frictional Force
 
Two adjacent lanes are curving.  Which lane
should you choose if you want to minimize the
centripetal force?
1.
inner lane
2.
outer lane
3.
both have same
force
4.
unable to be
determined
A lane on the highway is curving and you feel
forced towards the outside of the curve as you
drive.  The most direct cause of this is:
1.
 
Normal force
2.
 Gravitational force
3.
Inertia
4.
Centrifugal force
5.
Centripetal force
 
How is gravitational force proportional
to the distance between two objects?
1.
Directly
2.
Inversely
3.
No Correlation
How is gravitational force proportional
to the mass of two objects?
1.
Directly
2.
Inversely
3.
No Correlation
How is gravitational force proportional
to the volume of two objects?
1.
Directly
2.
Inversely
3.
No Correlation
On vacation, you go to the Grand Canyon and
walk down to the bottom of the canyon.  During
this walk what happened to your weight?
1.
Weight increased
2.
Weight decreased
3.
No change
4.
Not enough
information
You travel to another planet that has twice the
radius of the Earth but the same mass.
Compared to your weight on Earth, your weight
will
1.
Double
2.
Be cut in half
3.
Be ¼ your weight on
Earth
4.
The same
Which will produce the most torque?
 
1.
5N force exerted
.2m from the axis
2.
10N force exerted
.2m from the axis
3.
20N force exerted
.01m from the axis
4.
5N force exerted
.3m from the axis
What is a way to increase the torque
on an object?
1.
Exert more force.
2.
Exert the same force
at a greater distance
from the fulcrum.
3.
Exert a lesser force
closer to the
fulcrum.
4.
Both 1 and 2 are
correct
5.
All of the above
Which of the following produces
positive torque on a lever?
1.
A parallel force 20cm from the
axis
2.
A perpendicular force upward
20cm to the right of the axis
3.
A perpendicular force upward
20cm to the left of the axis
4.
A perpendicular force downward
20cm to the right of the axis
The average position of an object’s
weight is the
1.
Fulcrum
2.
Center of mass
3.
Gravitational Force
4.
Lever
5.
Axis of rotation
An object in rotational equilibrium has
1.
No torque applied
2.
A constant
tangential speed
3.
A net torque of zero
4.
An axis of rotation
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Explore key concepts in rotational motion through common scenarios like a point on a bicycle tire, determining centripetal forces in roller coasters, and understanding the forces at play in loops. Discover the relationship between mass, radius, and centripetal force, as well as the forces involved at different points along a roller coaster track. Delve into the fundamentals of centripetal acceleration and the role of different forces in maintaining circular motion.


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  1. Rotational Motion Review

  2. Consider a point on a bicycle tire that is momentarily in contact with the ground as the bicycle rolls across the ground with constant speed. The direction for the centripetal acceleration for this point at that moment is: 1. upward. 2. down toward the ground. 3. forward. 4. at that moment the acceleration is zero. 0% 0% 0% 0% upward. forward. down toward the ground. at that moment the acce...

  3. A roller coaster has two loops of different radii. Which will have the greater centripetal force? 1. loop with greater radius 2. loop with smaller radius 3. both have the same 4. not enough information 0% 0% 0% 0% both have the same loop with smaller radius not enough information loop with greater radius

  4. The Gemini roller coaster has two cars of differing mass. Which will have a greater centripetal force at the bottom of the first hill? 1. Car with more mass 2. Car with less mass 3. Both have the same 4. not enough information 0% 0% 0% 0% Car with more mass Car with less mass Both have the same not enough information

  5. A roller coaster has two loops of different radii. What forces provide the centripetal force at the top of the loop? 1. 2. 3. Normal force Gravitational force Normal Force + Gravitational Force Normal Force - Gravitational Force Gravitational Force Normal Force Frictional Force 4. 0% 0% 0% 0% 0% 0% 5. Normal force Frictional Force Gravitational force Normal Force + Gravitat... Normal Force - Gravitat... Gravitational Force N... 6.

  6. In a looped roller coaster, what force(s) provide the centripetal force at the top of the loop at the minimum speed needed to get over the loop? 1. 2. 3. Normal force only Gravitational force only Normal Force + Gravitational Force Normal Force - Gravitational Force Gravitational Force Normal Force Frictional Force 4. 0% 0% 0% 0% 0% 0% 5. Frictional For... Gravitational ... Gravitational ... Normal force o... Normal Force +... Normal Force -... 6.

  7. A roller coaster has two loops of different radii. What forces provide the centripetal force at the bottom of the loop? 1. 2. 3. Normal force Gravitational force Normal Force + Gravitational Force Normal Force - Gravitational Force Gravitational Force Normal Force Frictional Force 4. 0% 0% 0% 0% 0% 0% 5. Normal force Frictional Force Gravitational force Normal Force + Gravitat... Normal Force - Gravitat... Gravitational Force N... 6.

  8. A roller coaster has two loops of different radii. What forces provide the centripetal force directly to the left of the loop? 1. 2. 3. Normal force Gravitational force Normal Force + Gravitational Force Normal Force - Gravitational Force Gravitational Force Normal Force Frictional Force 4. 0% 0% 0% 0% 0% 0% 5. Normal force Frictional Force Gravitational force Normal Force + Gravitat... Normal Force - Gravitat... Gravitational Force N... 6.

  9. What gives the centripetal force that allows a motorcycle to drive around the inside of a cage? 1. Frictional 2. Gravitational 3. Normal 4. Tensional 5. Applied 0% 0% 0% 0% 0% Normal Applied Tensional Frictional Gravitational

  10. What gives the centripetal force that keeps the moon revolving around the Earth? 1. Frictional 2. Gravitational 3. Normal 4. Tensional 5. Applied 0% 0% 0% 0% 0% Normal Applied Tensional Frictional Gravitational

  11. Two adjacent lanes are curving. If the lanes are flat, what provides the centripetal force? 1. 2. 3. Normal force Gravitational force Normal Force + Gravitational Force Frictional Force 4. 0% 0% 0% 0% Normal force Gravitational... Frictional For... Normal Force +...

  12. Two adjacent lanes are curving. Which lane should you choose if you want to minimize the centripetal force? 1. inner lane 2. outer lane 3. both have same force 4. unable to be determined 0% 0% 0% 0% inner lane outer lane both have same force unable to be determined

  13. A lane on the highway is curving and you feel forced towards the outside of the curve as you drive. The most direct cause of this is: 1. 2. 3. 4. 5. Normal force Gravitational force Inertia Centrifugal force Centripetal force 0% 0% 0% 0% 0% Inertia Normal force Gravitational... Centripetal fo... Centrifugal fo...

  14. How is gravitational force proportional to the distance between two objects? 1. Directly 2. Inversely 3. No Correlation 0% 0% 0% Directly Inversely No Correlation

  15. How is gravitational force proportional to the mass of two objects? 1. Directly 2. Inversely 3. No Correlation 0% 0% 0% Directly Inversely No Correlation

  16. How is gravitational force proportional to the volume of two objects? 1. Directly 2. Inversely 3. No Correlation 0% 0% 0% Directly Inversely No Correlation

  17. On vacation, you go to the Grand Canyon and walk down to the bottom of the canyon. During this walk what happened to your weight? 1. Weight increased 2. Weight decreased 3. No change 4. Not enough information 0% 0% 0% 0% No change Weight increased Weight decreased Not enough information

  18. You travel to another planet that has twice the radius of the Earth but the same mass. Compared to your weight on Earth, your weight will 1. Double 2. Be cut in half 3. Be your weight on Earth 4. The same 0% 0% 0% 0% Double The same Be cut in half Be your weight on Earth

  19. Which will produce the most torque? 1. 5N force exerted .2m from the axis 2. 10N force exerted .2m from the axis 3. 20N force exerted .01m from the axis 4. 5N force exerted .3m from the axis 0% 0% 0% 0% 20N force exerted .01m ... 5N force exerted .2m fr.. 5N force exerted .3m fr.. 10N force exerted .2m f...

  20. What is a way to increase the torque on an object? 1. Exert more force. 2. Exert the same force at a greater distance from the fulcrum. 3. Exert a lesser force closer to the fulcrum. 4. Both 1 and 2 are correct 5. All of the above 0% 0% 0% 0% 0% Exert more force. All of the above Both 1 and 2 are correct Exert a lesser force close... Exert the same force at a...

  21. Which of the following produces positive torque on a lever? 1. A parallel force 20cm from the axis A perpendicular force upward 20cm to the right of the axis A perpendicular force upward 20cm to the left of the axis A perpendicular force downward 20cm to the right of the axis 2. 3. 4. 0% 0% 0% 0% A parallel for... A perpendicula... A perpendicula... A perpendicula...

  22. The average position of an objects weight is the 1. Fulcrum 2. Center of mass 3. Gravitational Force 4. Lever 5. Axis of rotation 0% 0% 0% 0% 0% Lever Fulcrum Center of mass Axis of rotati... Gravitational ...

  23. An object in rotational equilibrium has 1. No torque applied 2. A constant tangential speed 3. A net torque of zero 4. An axis of rotation 0% 0% 0% 0% No torque appl... A net torque o... A constant tan... An axis of rot...

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