Work
This is the formula for work
What is force x distance?
This is the force applied to the machine
What is the input force? or effort
a wheelbarrow is an example of this class of lever, effort at one end and the load in the middle.
What is a second class lever?
This is a slanted surface along which a force moves an object to a different elevation
What is an inclined plane
This states that energy can neither be created nor destroyed, but transfered.
What is the Law of Conservation of Energy?
The rate at which work is done
What is power?
This is the formula for power
What is work/time?
Any device that makes work easier by changing the direction or amount of force to accomplish a task.
What is a simple machine?
This is a V-shaped object whose sides are two inclined planes sloped toward each other.
What is a wedge
Mechanical energy is equal to________
What is kinetic energy + potential energy?
The transfer of energy that occurs when a force makes an object move
What is work?
This is the force applied by the machine
What is the output force? Load
This is a bar, beam, or rod and a fulcrum or pivot point.
What is a lever?
The mechanical advantage of the pulley pictured in Figure A.
What is a 3:1?
This is stored energy.
What is potential energy?
In order to do work on an object, this must be in the same direction as the object moves
What is the force?
This is the measure of how much of the work put into a machine is changed into useful output work by the machine
What is efficiency?
An axe is an example of this simple machine.
What is a wedge?
The kinetic energy of a 1200 kg object moving at a speed of 10 m/s
What is 60,000 J?
The efficiency of a machine with a work input of 800 J and work output of 200 J
What is the 25%?
Name a way that machines make doing work easier
What is increasing force, changing force and distance, and changing the direction of a force
An inclined plane increases the distance which decreases the ___________needed for work to be done.
What is force?