The Basics
This is done on an object when the object moves in the same direction in which the force is exerted.
What is work?
Any device that allows you to do work in an easier way.
What is a machine?
The number of times a machine increases a force exerted on it.
What is mechanical advantage?
What is machine efficiency?
This is a flat, sloped surface that is a simple machine.
What is an inclined plane?
This is the formula to measure the amount of work done on an object.
What is Work = Force x Distance?
Machines make work easier by changing one of these three factors.
What is input force, distance or direction.
This is the ratio to calculate mechanical advantage of a machine.
What is MA = Output Force / Input Force ?
This is used to calculate the efficiency of a machine.
What is: Efficiency = Output work / Input Work x 100% ?
This is a device that is thick at one end and taper to a think edge at the other end.
What is a wedge?
This is the unit of measure for work.
What is the joule?
The force you exert is called.
When changing the output force, a machine will have this mechanical advantage.
What is a mechanical advantage greater than 1?
No machine is ideal because of this.
What is friction?
This is an inclined plant wrapped around a cylinder.
What is a screw?
This is the amount of work done on an object within a unit of time.
What is power?
The amount of force the machine exerts.
What is output force?
When a machine changes the distance that work is performed, it will have this mechanical advantage.
What is a mechanical advantage less than 1?
This is the most basic device for making work easier.
What is a simple machine?
This is a rigid bar that is free to pivot or rotate on a fixed point.
What is a lever?
This is the formula used to calculate power.
What is Power = Work / Time ?
Give an example of a machine that changes force, distance and direction.
Answers will vary.
When a machine changes the direction of work, it will have this mechanical advantage.
What is a mechanical advantage equal to 1?
What is an inclined plane, wedge and screw?
This is the point that a level pivots around.
What is a fulcrum?