Free Printable mechanical advantage

Worksheets

mechanical advantage

Total questions: 21

Worksheet time: 44mins

Name

Class

Date

How much work is produced when 350 N is used to move a car 5 m (W=Fd)?

70 J

1750 J

355 J

175 J

What is effort (input) force?

the force one exerts on a machine

the force which an effort force must overcome in order to do work on an object via a simple machine.

the force the machine exerts on a object

the output work times the input distance

Lamar Gant, U.S. powerlifting star, became the first man to deadlift five times his own body weight in 1985. Deadlifting involves raising a loaded barbell from the floor to a position above the head with outstretched arms. Determine the work done by Lamar in deadlifting 300 kg to a height of 0.90 m above the ground (W=Fd).

270 J

2646 J

333 J

3.00X10^-3 J

How is work defined?

the amount of energy

the transfer of force over a distance

rate of work in a given time

the change in distance in a given time

Is this an example of work?
A teacher applies a force to a wall and becomes exhausted.

True

False

What is the equation for mechanical advantage?

MA=input force*output force

MA=output force/input force

MA=input force/output force

MA= output force - input force

if a load of a lever is 100 newtons and the force you apply is 20 newtons, what is your mechanical advantage?

120 N

5 N

2000 N

80 N

The amount by which a machine multiplies input force is known as the

work.

power.

output force.

mechanical advantage.

the amount of work you do when you exert one Newton of force to move the object one meter

joule

newton

meter

output force

10.

the rate at which work is done

power

work

machine

efficiency

11.

the percentage of the input work that is converted to output work

mechanical advantage

efficiency

joule

machine

12.

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?

15 J

45 J

0 J

5 J

13.

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?

15 J

45 J

0 J

5 J

14.

45,000 Joules of work done in 90 seconds results in how much power?

50 watts

500 watts

5000 watts

4,050,000 watts

15.

Work done = Force x _________

a. distance

b. acceleration

c. velocity

d. speed

16.

The efficiency of a machine can be increased by reducing __________________________.

effort

resistance friction

fulcrum

friction

17.

Force is a _____ or _______

simple complex

push pull

up down

in out

18.

The _________ of a machine is always less than 100%.

mechanical advantage

friction

force

efficiency

19.

All simple machines help make work _________.

harder

smaller

lighter

easier

20.

What is the unit of measurement for work?

Newtons

Joules

Watts

Metres

21.

What is mechanical advantage?

The advantage a machine has over a bicycle

A measure of how much a simple machine reduces work

A measure of when is the best time to use a simple machine

the number of times a machine increases input force

Reset

mechanical advantage

Total questions: 21

Worksheet time: 44mins

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