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Chapter 8 Test Prep
Prep Questions
Question | Answer |
---|---|
A________consists of a grooved wheel that holds a rope or cable. | Pulley |
A________ consists of a bar that pivots at a fixed point. | Lever |
A________ double inclined plane that moves. | Wedge |
A________is a straight, slanted surface. | Inclined plane |
A________consists of two circular objects of different sizes. | Wheel and axle |
A________is an inclined pane that is wrapped by a spiral. | Screw |
________the rate at which work is done or energy is transformed. | Power |
A________ is a machine made of more than one simple machine | Compound Machine |
________ is the unit used to express work. This is a Newton-meter (N*m) | Joule |
________ is when a forces causes an object to move in the force. This is force X distance | Work |
________ is the unit used to express power. Equivalent to joules per second This is J/s. | Watt |
________ is the work done on a machine. | Work Input |
________ is the work by a machine. | Work Output |
Work Output Force/ Input Force | Mechanical Advantage |
Work Output/Work Input x 100 | Mechanical Efficiency |