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lesson3.3

QuestionAnswer
the forearm of the human body works like a third-class lever. T
when you turn a screw into a piece wood, the input force of the screwdriver is converted to an output force by the threads of the screw. F
the efficiency of such a machine is determined by multiplying the efficiencies of each simple machine. T
what is a simple machine, and what are the six types of simple machines? a simple machine is work at only one movement (lever, wheel and axel, inclined plane, wedge, screw, pulley)
which factors determine whether a lever is a first-class lever, or third-class lever? location, fulcrum, input, output force.
how does the input force applied by a larger gear change when the force is applied to a smaller gear. it decreases
incline plane ramp, stairs
lever hammer handle, crowbar
wheel and axel shaft
drill bit screw
sailboat mast pulley
wheelchair ramp inclined plane
a wheel barrel wedge
a hockey stick third-class lever
an oar first-class lever
what is a compound machine a compound machine is a machine that uses 2 or more motion
how is the efficiency of a compound machine calculated multiplying the efficiencies
how can gears change the size and direction of the force the input force is applied to a larger gear
Created by: spiveshy5637