Work, Power & Simple Machines

a simple machine made of two circular or cylindrical objects fastened together that rotate about a common axis

• wheel and axle

• pulley

• screw

• compound machine

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

exerting a force on an object that causes the object to move some distance

• work

• power

• mechanical advantage

• efficiency

the amount of work you do when you exert one Newton of force to move the object one meter

• joule

• newton

• meter

• output force

the rate at which work is done

• power

• work

• machine

• efficiency

a device that allows you to do work in a way that is easier

• machine

• compound machine

• work

• power

Tags

NGSS.MS-PS2-2

the force you exert on the machine

• input force

• output force

• efficiency

• mechanical advantage

the force the machine exerts on an object

• input force

• output force

• efficiency

• mechanical advantage

the ratio of output force to input force

• work

• mechanical advantage

• efficiency

• power

Tags

NGSS.MS-PS2-1

a simple machine that is a flat, sloped surface

• inclined plane

• wedge

• lever

• fulcrum

a device that is thick at one end and tapers to a thin edge at the other end

• wedge

• inclined plane

• lever

• fulcrum