Work, Power, Machines (including mech. adv & efficiency)

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

• work

• power

• mechanical advantage

• efficiency

the rate at which work is done

• power

• work

• machine

• efficiency

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

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

a rigid bar that is free to pivot, or rotate, on a fixed point

• wedge

• inclined plane

• lever

• fulcrum

the fixed point that a lever pivots around

• wedge

• inclined plane

• lever

• fulcrum

a simple machine that acts like an inclined plane wrapped around a cylinder

• screw

• pulley

• fulcrum

• compound machine

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