Mechanical Advantage

What is the unit of measurement for work?

• Newtons
• Joules 
• Watts
• Meters

Tags

NGSS.HS-PS3-2

What is a machine?

• an object that has AI

• an object that is designed to take over the earth in 2020

• a device that changes force

• a mechanism that is used to decrease the amount of work done

What is mechanical advantage?

• The advantage a machine has over a bicycle

• A measure of how much a simple machine reduces work

• A measure of when is the best time to use a simple machine

• the number of times a machine increases input force

Tags

NGSS.MS-PS2-2

What is effort (input) force?

• the force one exerts on a 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

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 that is exerted by a machine

• the force the machine exerts on a object

• the output work times the input distance

No machine in existence has 100% efficiency due to ____________________.

• magic
• friction
• smoke
• input

Tags

NGSS.HS-PS3-4

A machine's __________________ is the number of times the machine multiplies the input force.

• power
• force
• mechanical advantage
• efficiency

An ideal machine has no ___________.

• moving parts
• power requirements 
• friction
• work required

Is this an example of work?
A teacher applies a force to a wall and becomes exhausted.

• True
• False

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 acts through

• the output work times the input distance