Work, Power & Simple Machines Flashcards by Angela Brice

Q

mechanical advantage

A

the number of simple machines x by force

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

power

A

the rate at which work is done

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

efficiency

A

work output / work input

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

compound machines

A

combination of simple machines

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

output force

A

force exerted by axle in wheel & axle

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

effort force

A

F in

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

ideal machine

A

device in which output equals work input

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

simple machine

A

any device that accpmplishes work in one movement

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

input force

A

force applied by machine

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

screw

A

inclined plane wrapped around cylinder

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

fulcrum

A

fixed point of lever

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

increasing length

A

increases IMA of an inclined plane

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

work output

A

increases as the efficiency of a machine increases

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

IMA of an inclined plane 8m long & 2m high

A

4m

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

wheel & axle

A

2 different-sized wheels that rotate together

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

lever

A

bar that pivots about a fixed point

Q

(blank) equals work output in an ideal machine

A

output work

Q

IMA of incline plane

A

length of slope / height of slope

Q

IMA of lever

A

length of input arm / length of output arm

Q

IMA of fixed pulley

A

IMA = 1 bc the pulley ONLY changes the direction of force

Q

IMA of block & tackle

A

number of rope segments used

Q

IMA of wheel & axle

A

radius of wheel / radius of axle