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Some people use a bottle opener when opening a bottled drink because they
it changes the direction of the force the man uses
It changes the direction of Sam's pulling force
Force applied
use less energy
The effort force is not enough to overcome the wheelbarrow weight
less effort force but had to move a greater distance
lever
decreasing the amount of work that is done
Using an inclined plane to do the work of moving the wheelbarrow load up to the next level, rather that lifting the wheelbarrow straight up, Sally was able to use
it changes the direction of the force the man uses
It changes the direction of Sam's pulling force
Force applied
use less energy
The effort force is not enough to overcome the wheelbarrow weight
less effort force but had to move a greater distance
lever
decreasing the amount of work that is done
The pulley on a flagpole makes it easier to raise the flag because
it changes the direction of the force the man uses
It changes the direction of Sam's pulling force
Force applied
use less energy
The effort force is not enough to overcome the wheelbarrow weight
less effort force but had to move a greater distance
lever
decreasing the amount of work that is done
A large rock and a long, thick board could be used to construct which simple machine?
it changes the direction of the force the man uses
It changes the direction of Sam's pulling force
Force applied
use less energy
The effort force is not enough to overcome the wheelbarrow weight
less effort force but had to move a greater distance
lever
decreasing the amount of work that is done
Why would Sam use the pulley to lift the heavy load?
it changes the direction of the force the man uses
It changes the direction of Sam's pulling force
Force applied
use less energy
The effort force is not enough to overcome the wheelbarrow weight
less effort force but had to move a greater distance
lever
decreasing the amount of work that is done
All of the following are ways that simple machines make work easier EXCEPT
it changes the direction of the force the man uses
It changes the direction of Sam's pulling force
Force applied
use less energy
The effort force is not enough to overcome the wheelbarrow weight
less effort force but had to move a greater distance
lever
decreasing the amount of work that is done
Which of the following best describes why a person may not be able to lift up a full wheelbarrow by its handles?
it changes the direction of the force the man uses
It changes the direction of Sam's pulling force
Force applied
use less energy
The effort force is not enough to overcome the wheelbarrow weight
less effort force but had to move a greater distance
lever
decreasing the amount of work that is done
Matt uses a ramp to get a box up into his tree house. For th work that he did, what did the ramp decrease?
it changes the direction of the force the man uses
It changes the direction of Sam's pulling force
Force applied
use less energy
The effort force is not enough to overcome the wheelbarrow weight
less effort force but had to move a greater distance
lever
decreasing the amount of work that is done
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