Work and Simple Machines Test Review

Front

What instrument would be used to measure the force that is applied to lift something? Options: gram balance, meter stick, stop watch, spring scale

Back

spring scale

Front

What type of pulley does not reduce the amount of effort and only changes the direction of the force? Options: grooved, fixed, movable, complex

Back

fixed

Front

A simple machine reduces the force required to do work by changing the ___ or direction of the force.

Back

distance

Front

The unit for force is ___.

Back

Newtons

Front

Mechanical ___ measures how well a machine converts input energy, work, and power into output energy, work, and power.

Back

efficiency

Front

The name of the fixed point that a lever is free to move around is called a ___.

Back

fulcrum

Front

Inclined planes that are wound around a post or cylinder are called ___.

Back

screws

Front

Pulleys that are ___, meaning that they are not attached to a structure, can be found on construction cranes.

Back

movable

Front

Door knobs and steering wheels are examples of ___.

Back

wheel and axles

Front

Pulleys that are ___, meaning that they are attached to a structure, can be found on window blinds.

Back

fixed