Which Machine?
Technical Terms
MA
It Figures
Seems Simple
100
This simple machine can raise and lower an item or hold items together.
What is a screw?
100
This is an unpowered device that uses a single applied force.
What is a simple machine?
100
If a large gear drives a small gear, the mechanical advantage is less than one, but it increases __________.
What is speed?
100
This is how mechanical advantage is calculated for a ramp or inclined plane.
What is dividing the distance of the ramp by its height?
100
True or False-The use of a simple machine can reduce the amount of work you have to do for a given task.
False-Although it might make the work easier, the amount of work would remain the same although the components (force and distance) might be combined in different amounts.
200
This simple machine changes the direction of a downward force to push outward.
What is a wedge?
200
This is a combination of two or more simple machines.
What is a compound or complex machine?
200
If a machine has a mechanical advantage of 3, then the ___________ force is 3 times greater than the _____________ force.
What is output force and input force? The output force is three times greater than the input force.
200
This is calculated by dividing output force by input force.
What is mechanical advantage?
200
This simple machine would be most helpful to move a heavy load over a long distance.
What is the wheel and axle?
300
This simple machine consists of an inclined plane wrapped around a cylinder and can hold items together or raise and lower items.
What is a screw?
300
The fixed point about which a lever pivots.
What is the fulcrum?
300
The bottom would have the greatest mechanical advantage because the Input/Effort Arm is longest, and the fulcrum is closest to the load.
300
A 18 meter ramp lifts objects to a height of 3 meters. This would be the mechanical advantage.
What is 6?
300
This is how the mechanical advantage of an inclined plane can be increased.
What is by increasing the distance?
400
This simple machine consists of a sloping surface and allows items to be moved from a lower level to a higher level more easily by increasing the distance and decreasing the force.
What is an inclined plane or ramp?
400
This part of a lever is indicated by the arrow in the picture below.
What is the input or effort?
400
A simple machine has an input force of 50 N and an output force of 250 N. This would be the Mechanical Advantage (MA).
What is 5?
400
This would be the mechanical advantage of this pulley system.
What is 2?
(There are two ropes supporting the load.)
400
This type of lever is pictured below.
What is a first class lever? The first class lever has the fulcrum in the middle.
500
This type of lever is pictured below.
What is a second class lever? The load is in the middle for a second class lever.
500
This would be the type of lever pictured below.
What is a third class lever? In a third class lever, the effort or force is in the middle.
500
A rope and pulley system is used to lift a box that weighs 300 N. This is the amount of force required to lift it if the pulley system has a mechanical advantage of 6.
What is 50 newtons?
500
A 16 meter ramp has a mechanical advantage of 2. This would be the height of the ramp.
What is 8 meters?
500
This would be the mechanical advantage of the pulley system pictured below.
What is 3? (Remember not to count the pulling rope.)
600
This determines the mechanical advantage of a pulley system.
What is the number of ropes supporting the load?
600
Using a small gear to drive a large gear will result in an increase of ____________ and a decrease of ______________.
What is an increase in torque/force and a decrease in speed?
600
This would be how a fixed pulley helps people lift a load even though the mechanical advantage is only 1 and force is not multiplied.
What is by changing the direction of the force? By allowing the user to pull downward with gravity, they can use their body weight to help.
600
If a lever has a mechanical advantage of 4 and the load arm is 2 meters in length, this would be the length of the effort arm.
What is 8 meters?
Effort Arm/Load Arm=Mechanical Advantage
Effort Arm/2 meters = 4
600
Name three simple machines found in the diagram below.
What are an inclined plane, a pulley, and wheel and axle?