Mechanical Advantage and Efficiency

What is the equation for Mechanical Advantage?

• MA=input force*output force
• MA=input force/output force
• MA=output force/input force
• MA= output force - input force

Which other simple machine is the inclined plane most SIMILAR to

• Lever
• Pulley
• Wedge
• Wheel and axel

if a load of a lever is 100 newtons and the force you apply is 20 newtons, what is your mechanical advantage?

• 120 newtons
• 50 newtons
• 2000 newtons
• 80 newtons

What happens when you have a short inclined plane?

• It takes less work to pull something
• It takes more work to pull something
• Nothing happens
• You have to accelerate to pull something

What is input force?

• 3 times the output force
• a push or a pull
• 80N
• the amount of force you exert on a machine

The work in has to equal work out because of...

• work=force x distance
• law of conservation of energy
• MA= output/input
• where the fulcrum placed

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

Machines don't reduce energy you need to move things, but they reduce what?

• Weight
• Mass
• Force
• Height

What is effort (input) force?

• the force required by a machine in order to accomplish work (the force you put on the machine)
• the force which an effort force must overcome in order to do work on an object via a simple machine.
• the force the machine exerts on a object
• the output work times the input distance

Tags

NGSS.MS-PS2-2

What is resistance (output) force?

• the force required by a machine in order to accomplish work (the force you put on the machine)
• the force which an effort force must overcome in order to do work on an object via a simple machine.
• the force the machine exerts on a object
• the output work times the input distance

Tags

NGSS.MS-PS2-2

What is effort (input) distance?

• the force required by a machine in order to accomplish work (the force you put on the machine)
• the force which an effort force must overcome in order to do work on an object via a simple machine.
• the distance an input force moves a machine
• the output work times the input distance