Machine Calculations 2020 (Notes Companion)

Which of the following is a machine? (choose all correct answers) (1)

• wedge

• wheel & axle

• pulley

• lever

• screw

A device that makes work easier is a _________________. (2)

• force

• charger

• machine

• friction

Name the 2 divisions of machines. (2)

• simple & compound

• simple & complex

• pulleys & levers

• ramps & tools

How does a machine make work easier? (choose all appropriate selections) (3)

• Increase force

• Change the direction of the force

• decrease force

• Increase the distance a force is applied

Machines that does work with only one movement of the machine. (4)

• Simple machines

• Compound machines

• Computing machines

• Molecular machines

Force applied by the machine is the ________________ force. (5)

• input

• output

Force applied to the machine is the ________________ force. (5)

• input

• output

Work done by you on a machine is the ________________ work. (6)

• input

• output

Work done by the machine is the ________________ work. (6)

• input

• output

How does input work relate to output work in an ideal machine? (7)

• input work equals output work

• input work is always greater than output work

• input work is always less than output work