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100
a lever where the fulcrum is between the input force and the load
What is a first-class lever?
100
the unit used to express work
What is a joule?
100
a fixed point on a lever
What is a fulcrum?
100
a machine that has a bar that pivots at a fixed point
What is a lever?
100
the rate at which energy is transferred
What is power?
200
moving objects has this type of energy
What is kinetic energy?
200
the unit used to express power
What is a watt?
200
a machine that is made of two simple machines
What is a compound machine?
200
causes machines not to be 100% efficient
What is friction?
200
a device that makes work easier by changing the size or direction of force
What is a machine?
300
the number of times the machine multiplies force
What is mechanical advantage?
300
a lever where the input force is between the fulcrum and the load
What is a third class lever?
300
the comparison of a machine's work output with the work input
What is mechanical efficiency?
300
a lever where the load is between the input force and the fulcrum
What is a second class lever?
300
a machine with a grooved wheel holding a rope
What is a pulley?
400
the transfer of energy using a force that causes the object to move in the direction of the force
What is work?
400
if you could unwind a screw, what kind of simple machine would you see?
What is an incline plane?
400
formula used to calculate work
What is FxD?
400
a machine with two circular devices of different sizes
What is a wheel and axle?
400
simple machines used by Egyptians to build pyramids
What are inclined planes and levers?
500
the mechanical advantage of a block and tackle pulley depends on the number of
What are rope segments?
500
Sam does 200J of work in 5 minutes and Susie does 200J of work in 4 minutes. What is the difference between the two jobs?
What is power?
500
Susan applies a force of 100N to move a table 5m. How much work did she do?
What is 500J?
500
what type of simple machine is the claw end of a hammer?
What is a first class lever?
500
the three types of pulleys
What is a fixed pulley, movable pulley & block and tackle pulley?