WorksheetsWork, power & machines
Total questions: 12
Worksheet time: 9mins
Work is the product of
speed and force
force and distance
power and force
motion and force
Is the rate of doing work.
(a)
Wich of the following is a unit of work?
Joule
Watt
Horsepower
Newton
How much work in N*m (J), is done when a 10.0 N force moves an object 2.5 m?
0.25 N*m
2.5 N*n
25 N*m
4.0 N*m
Power is equal to work divided by
time
force
distance
mechanical advantage
If a machine has a mecanichal advantage much larger than 1, its output force is
much larger than its input force.
much less than its input force.
about the same as its input force.
in the same direction as its input force
How is the work output of a machine related to its work input?
always less
always greater
always equal
always zero
A machine with a 5 N input force and a 25 N output force has a mechanical advantage of
2
5
20
125
Write 2 of the simple machines
(a)
The mecanical advantage of a pulley system depends upon
the diameter of the pulley wheels
the lenght of the rope
the number of sections of rope
the direction of the input force
A screw can be considered a type of
lever
inclined plane
pulley
compound machine
Which is not a simple machine?
Wedge
screw
lever
fulcrum
