WorksheetsWork Power Simple Machines Ima And Ama
Total questions: 14
Worksheet time: 7mins
These two parts act as one simple machine. They roll and are found on cars, bikes and wheelbarrows.
Wheel & Axle
Pulley
Inclined Plane
Lever
This simple machine can be used to lift a weight. It has a fulcrum, or pivot point, which can be located in the center, near the end or at the end.
Screw
Wedge
Lever
Inclined Plane
Examples of this simple machine are used to hold things together. It is made up of an inclinded plane wrapped around a cylider.
Wheel and Axle
Pulley
Inclined Plane
Screw
A heavy object could be rolled up this simple machine, instead of lifting it straight up. Using this simple machine can save effort, although the object must usually cover more distance if this simple machine is used.
Inclined plane
Pulley
Screw
Wheel & Axle
This is necessary to get something moving.
screw
resistance
force
wedge
A rod attached to the center of a wheel is called?
a magnet
a top
a wedge
an axle
What should you do to reduce the amount of effort needed to lift something using a first class lever?
move the fulcrum to the middle of the lever
move the fulcrum closer to the effort
Lift the item with your arms
move the fulcrum closer to the load
The efficiency of a Simple Machine is
is equal to 100%
is always more than 100%
Always less than 100%
is always 50%
If the Actual Mechanical Advantage (AMA) of a simple machine is 4, and the Ideal Mechanical Advantage (IMA) is 4.87, what is the Efficiency of the machine?
Hint: AMA/IMA x 100 = Efficiency
82.1%
12.17%
121%
88.7%
Which of the following statements is true for the picture.
B - is the fulcrum, A - is the effort, C - is the resistance
B - is the resistance, A - is the fulcrum, C - is the effort
B - is the resistance, C - is the fulcrum, A - is the effort
B - is the fulcrum, A - is the resistance, C - is the effort
In the picture, if the distace from a to b is 20 cm, and the distance from a to c is 80 cm, the then Ideal Mechanical Advantage is ___________________ ( Remember IMA = Effort Distance /Resistance Distance)
20
4
1/4
80
What is the formula for work?
Work = Distance/Acceleration
Work = Distance x Time
Work = Distance x Force
Work = Mass / Acceleration
What is the equation for power?
Power (W) = time (s) + Work (J)
Power (W) = Work (J) / time (s)
Power (W) = Distance (m) / time (s)
Power (W) = Force (N) x accelleration (m/s2)
True or False: For work to be done on an object, the force must be done in the direction of the motion.
True
False
