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- 1. Multiple Choice
If an object is at rest on an inclined plane, which of the following forces is greatest?Normal ForceFrictionWeightBoth Normal Force and Weight are equal, so they both are the greatest. - 2. Multiple ChoiceA 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?19N21N42N26N
- 3. Multiple ChoiceA 10.0-kilogram mass held at rest on a frictionless 30.0º incline by force F. What is the magnitude of force F?49.1N98.1N85N9.81N
- 4. Multiple Choice
Which of the following is the best expression for the Normal Force?
FN = mg cos(ϴ)
FN = mg sin(ϴ)
FN = mg sin(180-ϴ)
FN = mg cos(90-ϴ)
- 5. Multiple Choice
If there is no friction, then the acceleration would be equal to
mg
sin(θ)mg
g
sin(θ)g
- 6. Multiple ChoiceA 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?2 m/s^2 down the incline5.3 m/s^2 up the incline2 m/s^2 up the incline3.9 m/s^2 down the incline
- 7. Multiple Choice
A 20.0-kilogram mass held at rest on a frictionless 25.0º incline by force F. What is the magnitude of force F?
49.1N
98.1N
83N
9.81N
- 8. Multiple ChoiceWhat direction does friction act relative to motion?in the same directionin the opposite directionneed more informationdepends on the force
- 9. Multiple ChoiceA 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?1.4E3N1E4N1.4E4N9.9E4N
- 10. Fill in the Blank
a 43 kg box is on a 32 degree inclined plane with a friction coefficient of .23 What is the Fnet
- 11. Multiple Choice
The diagram above represents a 10 N block sliding down a 300 incline at a constant speed. What is the force of friction on the block?
5.0 N
10 N
49 N
98 N
- 12. Fill in the Blank
Example Problem - A 562N crate is resting on a plane inclined 30.0 degrees above the horizontal. Find the components of the crate's weight that are parallel and perpendicular to the plane.
- Answer choicesTagsAnswer choicesTags