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- Q1
What is the formula to calculate Work?
W= (Distance x 3.14)/pitch
W= f x D
W= f� x energy
W= effort arm/load arm
30s7.P.2.4 - Q2
What is the mechanical advantage of a screw with a pitch of 3 mm and a diameter of 9 mm?
27.0
3.0
1.0
9.4
60s - Q3
If a person is using a fixed pulley to lift a 500 N load, how much effort force is needed to accomplish the task?
501 N
1 N
250 N
1000 N
30s - Q4
Why does this lever provide a large mechanical advantage?
There is a light load
The fulcrum is far away from the effort
The fulcrum is close to the load
There is a heavy load
30s - Q5
The image shows a pulley system with a mechanical advantage of 3.� If you pull the rope 18 meters, how far does the load move?
3 meters
6 meters
18 meters
54 meters
30s - Q6
If the output force in a single moveable pulley is 600 N, what was the input force needed to lift the load?
601 N
1201 N
301 N
201 N
30s - Q7
The distance between the threads of a screw is known as the:
pitch
effort arm
mechanical advantage
load arm
30s - Q8
Simple machines do all of the following�except:
Change the direction the force to do work
Decrease the effort force needed to do work
Change the amount of work that needs to be done
Increase the distance traveled to do work
30s - Q9
All of the following are examples of a fulcrum except:
pole
wrist
wheel of wheelbarrow
hinge
30s - Q10
What is an example of a pulley?
flag pole
slide
axe
doorknob
30s - Q11
What type of simple machine is this?
wheel and axle
lever
inclined plane
pulley
30s - Q12
A device that has two or more simple machines working together
fulcrum
compound machine
movable pulley
simple machine
30s - Q13
An axe is an example of a(n):
wedge
lever
pulley
inclined plane
30s - Q14
A simple machine that consists of a rigid bar that pivots about a fixed point:
pulley
inclined plane
lever
screw
30s - Q15
An inclined plane wrapped around a rod forms this simple machine:
screw
lever
wedge
pulley
30s
