WorksheetsWork and Mechanical Advantage
Total questions: 10
Worksheet time: 1hrs 5mins
Name
Class
Date
1.
What is the work equation?
W=
a)
F * d * cos(θ)
b)
m * a
c)
d / V
d)
F/ d * cos(θ)
2.
A 5000N block is lifted 10 m. All force is going in the direction of movement. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
3.
If 150 Joules of work is needed to move a box 10 meters, what force was used? Neglect friction.
a)
1500 N
b)
15 N
c)
1.5 N
d)
150 N
4.
Mechanical advantage is a measure of how much a machine multiplies the input
a)
efficiency.
b)
force.
c)
power.
d)
work.
5.
Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever?
a)
1:1
b)
10:1
c)
100:1
d)
1:10
e)
1:100
6.
A lever and fulcrum are used to lift a fallen tree, which has a weight of 480 N. If the lever has a mechanical advantage of 5.5, what is the input force that will begin lifting the tree off the ground?
a)
5.5 N
b)
40.7 N
c)
87.3 N
d)
2640 N
7.
How much work is produced when 350N is used to move a car 5m?
a)
70 J
b)
1750 J
c)
355 J
d)
175 J
8.
What is effort (input) force?
a)
the force one exerts on a machine
b)
the force which an effort force must overcome in order to do work on an object via a simple machine.
c)
the force the machine exerts on a object
d)
the output work times the input distance
9.
What is the equation for mechanical advantage?
a)
MA=input force*output force
b)
MA=output force/input force
c)
MA=input force/output force
d)
MA= output force - input force
10.
What is the mechanical advantage if you lift a load of 300 newtons and you only push down with 50 newtons?
a)
250
b)
50
c)
60
d)
6
100 %
