Force And Work

10 Questions | By E050265 | Updated: Mar 21, 2022 | Attempts: 385

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1.

Which pulley requires the least amount of input force?
- A.
  
  Pulley A
- B.
  
  Pulley B
- C.
  
  Pulley C
- D.
  
  Pulley D
Correct Answer
D. Pulley D
2.

Pulley D requires less effort to lift the object because________________.
- A.
  
  The pulley has one wheel
- B.
  
  The pulley has many wheels and supporting ropes
Correct Answer
B. The pulley has many wheels and supporting ropes
3.

The pictures are examples of machines called ______________.
- A.
  
  Inclined planes
- B.
  
  Pulleys
Correct Answer
B. Pulleys
4.

The pictures are examples of machines called _________________.
- A.
  
  Inclined planes
- B.
  
  Pulleys
Correct Answer
A. Inclined planes
5.

When using the ramp (inclined plane), it is easier to lift the boat, but it has to be pulled a greater distance. An inclined plane can change the direction and the amount of the input force by ____________ the distance over which the force is applied.
- A.
  
  Reducing
- B.
  
  Increasing
- C.
  
  Decreasing
Correct Answer
B. Increasing
6.

W=F x d
- A.
  
  24 J
- B.
  
  5 J
- C.
  
  80 J
- D.
  
  16 J
Correct Answer
C. 80 J
7.

Which of the following is an example of work?
- A.
  
  Pushing a car, but it does not move
- B.
  
  Pushing a box forward 10 meters
- C.
  
  Carrying a tray
Correct Answer
B. Pushing a box forward 10 meters
8.

Which of the following is not an example of work?
- A.
  
  Lifting an object up 2 meters
- B.
  
  Pushing an object forward 5 meters
- C.
  
  Carrying a backback
Correct Answer
C. Carrying a backback
9.

The unit for work is a _______________.
- A.
  
  Meter
- B.
  
  Joule
- C.
  
  Newton
Correct Answer
B. Joule
10.

The tool used to measure the amount of force is called the
- A.
  
  Triple beam balance
- B.
  
  Mass
- C.
  
  Spring scale
- D.
  
  Weight
Correct Answer
C. Spring scale