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S8P3.c
demonstrate the effect of simple machines on work
Term | Definition |
---|---|
work | the transfer of energy to an object by using a force that causes the object to move in the direction of the force |
machine | a device that helps do work either by overcoming a force or changing the direction of the applied force |
inclined plane | a simple machine that is straight ,slanted surface ,which facilitates the raising of loads;a ramp |
wedge | a simple machine that is made up of two inclined planes and that moves;often used for cutting |
screw | a simple machine that consist of an inclined plane wrapped around a cylinder |
lever | a simple machine that consist of a bar that pivots at a fixed point called a fulcrum |
pulley | a simple machine that consist of a wheel over which rope,chair,or wire passes |
whee and axle | a simple machine consisting of two circular object of different sizes;the wheel is the large of the two circular objects |