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How can simple machines make work easier?
wheel and axle
lifting a box off the ground
by decreasing the force needed to complete the task
pulley
True
True
False
inclined plane
Which of the following situations is work?
wheel and axle
lifting a box off the ground
by decreasing the force needed to complete the task
pulley
True
True
False
inclined plane
Simple machines decrease the amount of work. True or False?
wheel and axle
lifting a box off the ground
by decreasing the force needed to complete the task
pulley
True
True
False
inclined plane
A simple machine that is a straight, slanted surface, and facilitates the raising of loads
wheel and axle
lifting a box off the ground
by decreasing the force needed to complete the task
pulley
True
True
False
inclined plane
A machine is a device that makes work easier by changing the size or direction of a force. True or False?
wheel and axle
lifting a box off the ground
by decreasing the force needed to complete the task
pulley
True
True
False
inclined plane
a simple machine that consists of two circular objects of different sizes
wheel and axle
lifting a box off the ground
by decreasing the force needed to complete the task
pulley
True
True
False
inclined plane
Efficiency is never 100% because of friction. True or False?
wheel and axle
lifting a box off the ground
by decreasing the force needed to complete the task
pulley
True
True
False
inclined plane
Which simple machine would be the most efficient for lifting an object 30 m off the ground?
wheel and axle
lifting a box off the ground
by decreasing the force needed to complete the task
pulley
True
True
False
inclined plane
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