NEW
Font size
S
M
L
XL
WorksheetsLEVERS
Total questions: 16
Worksheet time: 10mins
Name
Class
Date
1.
if a load of a lever is 100 newtons and the force you apply is 20 newtons, what is your mechanical advantage?
a)
120 N
b)
5 N
c)
2000 N
2.
The amount by which a machine multiplies input force is known as the
a)
work.
b)
output force.
c)
mechanical advantage.
3.
How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?
a)
45 J
b)
0 J
c)
5 J
4.
A rigid bar that is free to pivot, or rotate, on a fixed point is a :
a)
wedge
b)
lever
c)
fulcrum
5.
3. Which type of lever is this?
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
6.
A see saw is an example of a:
a)
1st class lever
b)
2nd class lever
c)
3rd class lever
7.
A wheelbarrow is an example of a:
a)
1st class lever
b)
2nd class lever
c)
3rd class lever
8.
a)
1st Class
b)
2nd Class
c)
3rd Class
9.
Jeff is a landscaping contractor and lifts a rock weighing 600 pounds by wedging a board under the rock. Jeff weighs 150 pounds and puts all of his weight on the lever. What was his MA?
a)
0
b)
2
c)
4
10.
To increase the mechanical advantage of a lever
a)
make sure the fulcrum is in the middle of the lever
b)
move the fulcrum closer to the load
c)
move the fulcrum closer to the effort
d)
use a bigger fulcrum
11.
A force of 55 N is applied to a bottle opener. If the bottle opener applies 575 N of force to the bottle, what is the mechanical advantage?
a)
0.10
b)
10.45
c)
31,625
12.
Which lever would be the easiest to lift the load?
a)
A
b)
B
c)
C
13.
Which of the following is true for the picture?
a)
elephant is the fulcrum, mouse is the effort, triangle is the load
b)
mouse is the fulcrum, triangle is the effort, elephant is the load
c)
triangle is the fulcrum, mouse is the effort, elephant is the load
14.
The mass lifted by the lever is called ______________.
a)
lever arm
b)
fulcrum
c)
effort
d)
load
15.
How many simple machines are there?
a)
4
b)
6
c)
8
d)
12
16.
The closer the load is to the fulcrum, the _________ it is to lift the load.
a)
easier
b)
harder
Reset
