Mechanical Advantage

 Work done = Force x _________

• a. distance
• b. acceleration
• c. velocity
• d. speed

What is power

• time it takes to do work
• work
• machine

Force is a _____ or _______

• simple    complex
• push     pull
• up      down
• in      out

Tags

NGSS.MS-PS2-1

How much work is produced when 350 N is used to move a car 5 m?

• 70 J
• 1750 J
• 355 J
• 175 J

Tags

NGSS.MS-PS3-5

A 62 kg box is lifted 12 m off the ground. How much work was done? (hint: calculate weight of the box first)

• 5.17 J
• 72.91 J
• 744.0 J 
• 7291.2 J

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

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
• A measure of the force amplification achieved by using a tool

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

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-ETS1-1

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

What is resistance (output) 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 distance through which the output force is exerted