NEW
Font size
S
M
L
XL
WorksheetsPOE Quiz - Simple Machines
Total questions: 10
Worksheet time: 8mins
Name
Class
Date
1.
Mechanical Advantage (MA) is:
a)
Ratio of the magnitude of the resistance and effort forces
b)
Ratio of distance traveled by the effort and the resistance force
c)
All of the above
d)
None of the above
2.
If MA is greater than 1:
a)
Proportionally less effort force is required to overcome the resistance force
b)
Proportionally greater effort force is required to overcome the resistance force
c)
Proportionally less effort distance is required to overcome the resistance force
d)
MA cannot be greater than 1
3.
Which simple machine will have a mechanical advantage less than 1?
a)
crane
b)
weight machine
c)
a windmill
d)
a conveyer belt
4.
An inclined plane is 15 meters long and raises 3 meter high. If you want to push a 20 N box up the inclined plane, how much effort force will you need? Remember, FeDe = FrDr
a)
900 N
b)
4 N
c)
2.25 N
d)
100 N
5.
A pulley brings a 100 kg piano up into a second story window. What is the ideal mechanical advantage if the pulley has 5 strands?
a)
20
b)
500
c)
5
d)
0.05
6.
Tommy and Jimmy are on a seesaw like the picture. Tommy weighs 40 lb and Jimmy weighs 30 lb. What is the Mechanical Advantage when Jimmy makes the two boys level?
a)
1.3
b)
0.75
c)
1
d)
120
7.
The stairs leading up a lighthouse are shaped like a screw. If the pitch of the stairway was 1/0.005 and the radius of the stairway was 3ft, how much is the ideal mechanical advantage? Remember IMA = (2piR)/pitch
a)
1.0
b)
0.015
c)
0.04
d)
0.09
8.
A wheelbarrow is carrying 50 lb of cement. The radius of the wheel is 10 inches and the radius of the axel is 4 inches. What effort force is needed to move the cement if the axle is driving the wheel? Remember FeDe = FrDr
a)
12.5 lb
b)
125 lb
c)
4 lb
d)
20 lb
9.
Mrs. Cruz wants to lift a bag of chocolates in a crane vending machine. The chocolate weighs 2 lb. When she pulled the crane with her force sensor, she saw that she put in 1.5 lb of force effort. What is the mechanical advantage of the crane?
a)
1.33
b)
0.75
c)
2
d)
1.5
10.
David wants to lift Moses using a moveable pulley. If Moses weighs 150 lbs, and David uses a force of 30 lbs, how much is the mechanical advantage?
a)
10
b)
450
c)
5
d)
8
Reset
