NEW
Font size
WorksheetsWork & Simple Machines
Total questions: 21
Worksheet time: 32mins
What is an example of work being performed?
pushing against a stationary wall
holding a 100 pound bar bell
pushing a lawn mower 100 yards
marching in place
Two objects, A and B, of different masses are placed on a level surface. A force of 2 N is applied to each of the two objects. Object A moves, but object B remains stationary. What can be concluded about the work done by the applied force on objects A and B?
Work is not done by the applied force on either object A or B.
Work is done by the applied force on both objects A and B.
Work is done by the applied force on object B but not on object A.
Work is done by the applied force on object A but not on object B.
All of the following are ways that simple machines make work easier EXCEPT ____.
allow you to use less force
make work faster
change the direction of your force
allow you to do less work
A wheelbarrow is a compound machine. Which simple machines are used to form this compound machine?
lever, pulley
lever, wheel and axle
inclined plane, wedge
wedge, wheel and axle
The image above shows three inclined planes built at the same height, but with different lengths. Which statement is true about these inclined planes?
The shorter ramp will provide the most mechanical advantage making work the easiest
The longer ramp will provide the most mechanical advantage making work the easiest
The longer ramp will provide the least mechanical advantage making work the harder
The medium length ramp will provide the most mechanical advantage making work the easiest
Which best describes a lever?
a simple machine that consists of an inclined plane wrapped around a cylinder
a simple machine consisting of a sloping surface connecting higher and lower elevations
a simple machine that consists of a bar that rotates around a fixed point called a fulcrum
a simple machine that consists of two connected rings or cylinders, which turn in the same direction around a single center point
Scissors are considered a compound machine. Which simple machines combine to create scissors?
wedge and pulley
wedge and lever
lever and wheel
axle and wedge
A 500N block is lifted 10 m. How much work was done?
50000 J
5000 J
500 J
50 J
if a load of a lever is 1,000 newtons and the force you apply is 20 newtons, what is your mechanical advantage?
120 newtons
50 newtons
2000 newtons
80 newtons
What's the force that results from using a machine?
Input force
Output force
Input work
Output work
Output work is always _____ input work.
equal to
greater than
less than
duplicates
A seesaw is an example of a ________ lever?
1st class
2nd class
3rd class
All 3 classes of levers
Stairs is a kind of a/an
wedge
pulley
inclined plane
wheel and axle
This device is a kind of a/an
wedge
lever
incline plane
wheel and axle
The device used to raise a flag up a flag pole is an example of a
wheel and axle
lever
inclined plane
pulley
