Ch 14

Question 1

Work

Answer 1

Is the product of the force and distance

Question 2

Joule

Answer 2

Is the si unit for work

Question 3

Power

Answer 3

Is the rate of doing work

Question 4

Watt

Answer 4

Is the si unit for power which is equal to to one joule per second

Question 5

Machine

Answer 5

Is a device that changes

Question 6

Input force

Answer 6

The force you exert on a machine

Question 7

Input distance

Answer 7

The distance the input force acts through

Question 8

Work input

Answer 8

The work done by the input force acting through the input distance

Question 9

Output force

Answer 9

The force exerted by a machine

Question 10

Output distance

Answer 10

The distance the output force exerted

Question 11

Work output

Answer 11

The output force multiplied by the output distance

Question 12

Mechanical advantage

Answer 12

Of a machine is the number of times that the machine increases an input force

Question 13

Actual mechanical advantage

Answer 13

The mechanical advantage determined by measuring the actual force on a machine this equals the ratio of the output force to the input force

Question 14

Ideal mechanical advantage

Answer 14

Of a machine is the mechanical advantage in the absence of friction

Question 15

Efficiency

Answer 15

The percentage of the work input that becomes work output in a machine

Question 16

Compound machine

Answer 16

Is a combination of the two or more simple machines that operate together