Mechanical Advantage
Pulleys and Wheels and Axels
Levers, Inclined Planes and Wedges
Screws
100
What is Mechanical Advantage?
Mechanical Advantage is how much a simple machine multiplies our force by.
100
What is the mechanical advantage of: 1.a fixed pulley 2.a movable pulley
1. MA=1 2. MA=2
100
What is the mechanical advantage of a class 3 lever always equal to?
Less than 1.
100
What is the pitch of a screw and how do you calculate it?
The pitch is the distance from one thread to the next. For a more accurate result, you divide 1 cm by the number of threads there is in 1 cm.
200
Why does Mechanical Advantage not have a unit?
Mechanical Advantage does not have a unit because both the input and output forces are in Newtons and when divided, they cancel each other out.
200
How do you find the mechanical advantage of a wheel and axel?
By dividing the radius of the wheel by the radius of the axel.
200
What is the mechanical advantage of a ramp with a height of 2 m and a slope length of 9 m.
MA=4.5
200
How do you calculate the mechanical advantage of a screw?
MA=circumference of screw/pitch of screw
300
What is Ideal Mechanical Advantage and what is its formula?
Ideal Mechanical Advantage is Mechanical Advantage except without other forces acting to waste energy such as friction. IMA=Output force/Input force
300
If a block and tackle system has 4 supporting ropes and an output force of 234 N, what is the input force?
58.5 N
300
What is the mechanical advantage of a nail with a slope length of 5 cm and a base 3 cm thick?
MA=1.66666666666666...
300
Which has a greater mechanical advantage: a screw with 10 threads or a screw with 8 threads?
A screw with 10 threads.
400
What is Actual Mechanical Advantage and what is its formula?
Actual Mechanical Advantage is Mechanical Advantage in the real world which means it accounts for forces like friction. AMA=output force - energy wasted/input force or measured output force/measured input force
400
What is the Mechanical Advantage of a wheel and axel system if the wheel has a radius of 7 cm and the axel has an area of 12.56 cm squared?
MA=3.5
400
What is the mechanical advantage of a wheel-barrow 80 cm long with the load taking up 30 cm of it?
2.66666666...
400
What is the mechanical advantage of a screw being turned by a screw-driver if the radius of the screw-driver handle is 2 cm and there are 5 threads in 1 cm of the screw?
MA=125.6/2 =62.8
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