Inclined plane
Wadge
Screw
Lever
Pulley
100
What is an example of an inclined plane?
A ramp
100
A wedge is......
a device that is thick at one end and tapers to a thin edge at the other end
100
What is a screw?
A screw can be thought of as an inclined plane that is wrapped around a cylinder
100
What are examples of a wheel and axle
screwdriver, doorknob, and steering wheel
100
What is a pulley?
What is made of a grooved wheel with rope or a cable wrapped around it?
200
What is an inclined plane?
Is a flat, sloped surface that allows you to exert your force over a longer distance
200
A wedge it’s like an _________ that can move
A) screw
B) inclined plane
C) pulley
B) A wedge it’s like an __inclined plane_ that can move
200
What are some examples of a screw?
A screw, a lightbulb and the lid of a jar
200
A Lever is a......
rigid bar that is free to pivot or rotate around a fixed point (a fulcrum)
200
True or false: An elevator is a pulley
True
300
What is one scenario where you would encounter an inclined plane?
A) Walking up a ramp to get to class faster
B) Opening a door
C) unscrewing a jar of pickles
A) Walking up a ramp to get to class faster
300
What are examples of wedge?
What is a door stopper, head of an ax, a knife blade?
300
True or false: A light bulb is not a screw
False
300
What is the difference between first-class levers and second-class levers?
First-class levers always change the direction of the input force, second-class levers increase force WITHOUT changing its direction.
300
What is this picture of?
A) Lever
B) Wedge
C) Pulley
C) Pulley
400
As a result the input force needed is ____ ____ the output force
Less than
400
Which of these scenarios would use a wedge?
A) All roads lead back to Hamilton
B) Raising a flag
C) Chopping wood
D) Moving heavy furniture into a truck
C) Chopping wood
400
True or false: If you need to put two pieces of what together you would use a screw?
True
400
What is a fulcrum?
A fixed point that a lever rotates or pivots around
400
What are 2 ways pulley make work easier?
Decrease the amount of input force needed to lift the object and/or it can change the direction of your input force.
500
What is the mechanical advantage formula for an inclined plane?
MA = length of incline / height on incline
500
The equation to calculate mechanical advantage wheel and axle
MA wedge = length of wedge / width of wedge
500
What is the mechanical advantage formula for a screw?
MA screw = length around threads/ length of the screw
500
The equation to calculate mechanical advantage wheel and axle
MA wheel and axle = radius of wheel / radius of axle
500
How do you find the mechanical advantage of a pulley?
MA pulley = # of sections of rope that support the object