Chapter 09 Simple Machines Review Quiz

Identify the choice that best completes the statement or answers the question. A simple machine can multiply:

• forces only

• energy only

• forces and energy

• forces and speed

Identify the choice that best completes the statement or answers the question. All of the following are considered to be simple machines EXCEPT:

• scissors

• a bicycle

• a jackknife

• a wheelbarrow

Identify the choice that best completes the statement or answers the question. A lever rotates around a fixed point called a:

• ball bearing

• gear

• pulley

• fulcrum

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Mechanical advantage can be defined as the ratio of:

• work input to work output.

• work output to work input.

• output force to input force.

• input force to output force.

Identify the choice that best completes the statement or answers the question. The simple machine that operates as a ramp that curves around a shaft is a:

• rope and pulley system.

• screw.

• lever.

• gear.

Identify the choice that best completes the statement or answers the question. The force directed along the ropes of a rope and pulley system is called:

• thread

• lead

• mechanical advantage

• tension

In the picture of the crowbar, which letter shows the fulcrum?

• A

• B

• C

• None of the above

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In the picture of the crowbar, which letter shows the input force?

• A

• B

• C

• None of the above

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The gear ratio is equal to:

• output teeth divided by input teeth.

• output turns divided by input turns.

• input speed divided by output speed.

• input direction divided by output direction.

Gears may be combined in a system to:

• transfer motion.

• change rotating speeds.

• multiply forces.

• All of the above

Tags

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