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Worksheetssimple machines
Total questions: 24
Worksheet time: 27mins
work can be thought of as
a force that moves an object a certain distance
How can simple machines make work easier?
by decreasing the force needed to complete the task
by increasing the friction between the machine and the object
by adding more work on the object than originally applied
by removing the force of gravity on the object
Simple machines can make work easier by reducing the effort force needed to move an object. However, there is a trade off for decreased effort. What is the trade off?
you have to move a greater distance
The distance moved is decreased.
The amount of work is increased.
The amount of work is decreased.
A doorknob is an example of a _______.
wheel and axle
inclined plane
pulley
wedge
An example of a lever is a ________.
car wheels
drill
staircase
hammer
The fixed point around which a lever rotates is know as the
wheel.
fulcrum.
input force.
output force.
A simple machine that splits an object apart is a _______.
inclined plane
fulcrum
wedge
lever
What is the formula needed to solve for work?
w = f/d
w = f*d
w = f+d
If you push a cart with a force of 60 N for 2 m, how much work have you done?
120 J
30 J
120 N
30 N
move the fulcrum closer to the resistance
What does the term Mechanical Advantage mean?
What the machine can accomplish
how much better the machine can work
how much stronger a machine makes you
how much friction a machine overcomes
Why would you ever want a machine with a mechanical advantage less than 1?
makes you stronger
makes you faster
makes you more efficient
you wouldn't- It makes you weaker
Why is it easier to use a hamer to pound in a nail?
the hammer makes you faster- more energy
the hammer makes you stronger
the hammer has a high MA
so you don't hurt your hand
how much force is needed to move a 50 Newton block 5 meters. You are using a lever that you have to move 10 meters?
10 N
100 N
25 N
0.5 N
A device that helps makes work easier
A device that gives you more work out
In a wheel and axle, the wheel travels a longer ________ but takes ____ force
Force, work
Distance, more
Energy, less
Distance, less
