Work And Simple Machines Block 1
This quiz is designed to be used as an assessment following the use of my multimedia website.
- 1.The transfer of energy that occurs when a force makes an object move a distance.
- A.
Force
- B.
Work
- C.
Power
- D.
Joule
- 2.A baseball bat is an example of this class of lever:
- A.
First-class
- B.
Second-class
- C.
Third-class
- 3.SI unit for power
- A.
Joule
- B.
Watt
- C.
Newton
- 4.All of these are examples of inclined planes except:
- A.
Slide
- B.
Ramp
- C.
Staircase
- D.
Wheel
- 5.The amount of work done per unit of time
- A.
Power
- B.
Mechanical advantage
- C.
Work
- D.
Force
- 6.The number of times a machine multiplies an effort force.
- A.
Energy
- B.
Mechanical advantage
- C.
Input force
- D.
Output force
- 7.Which is not an example of a wedge?
- A.
Ax
- B.
Knife
- C.
Ramp
- D.
Scissors
- 8.SI unit of measurement for energy and work.
- A.
Watt (W)
- B.
Newton (N)
- C.
Joule (J)
- 9.A flag pole is an example of this type of pulley:
- A.
Fixed
- B.
Movable
- C.
Block and tackle
- D.
Pulley system
- E.
- 10.An ax is an example of a (an)
- A.
Inclined plane
- B.
Wheel and axle
- C.
Pulley
- D.
Wedge
- 11.Which job would be best done by a wedge?
- A.
Slicing an onion
- B.
Pulling a box
- C.
Lifting a bucket
- D.
Moving a fork
- 12.In which of the following is no work done?
- A.
Lifting weights up over your head
- B.
Lifting a book
- C.
Pushing on a wall
- D.
Pushing an object 3 meters
- 13.The efficiency of a machine is always less than 100 percent because
- A.
The work input is too small
- B.
The work output is too small
- C.
A machine can't have a mechanical advantage less than 1
- D.
Some work input is lost to friction and heat
- 14.When the kinetic energy of an object increases, which of the following also increases?
- A.
Force
- B.
Velocity
- C.
Potential energy
- D.
Gravitational pull
- 15.Which type of pulley has the greatest mechanical advantage?
- A.
Fixed
- B.
Moveable
- C.
Compound or pulley system
- 16.A simple machine that is a rigid bar that has to move around a fixed point called a fulcrum.
- A.
Pulley
- B.
Screw
- C.
Lever
- D.
Wheel and axle
- 17.If a tractor pulls a trailer 600 m with a force of 1,300 N, how much work would it be doing?
- A.
780,000 W
- B.
780,000 J
- C.
780,000 N
- D.
78,000 J
- 18.A wheel barrow is which class of lever?
- A.
First class
- B.
Second class
- C.
Third class
- 19.The force exerted on an object by a machine may be called any of the following except.
- A.
Output force
- B.
Input force
- C.
Load
- D.
Resistance
- 20.If you exert a force of 10.0 N to lift a box a distance of 0.75 m, how much work do you do?
- A.
7.5 J
- B.
75 J
- C.
75 N
- D.
7.5 N
Questions: 80 | Attempts: 6478 | Last updated: Apr 4, 2021
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