Pulley & Wheel and Axle
When two loads are on a pulley will the side with greater mass rise or fall?
Since the side with more mass is heavier it will fall because the lighter side does not have enough mass for it to rise or stay the same.
True or False: When the load is in the middle of a lever it is considered a second class lever?
True, it doesn't matter where the other two components are as lo g as the load is in the middle it is considered a 2nd class lever.
True or False: Can the job of a wedge be to hold something in place?
True, a wedge can be used to not only hold objects together but also separate them.
What is a screw?
A rod with an incline plane running around it.
Would a hill be considered an incline plane? If so why?
Yes, because it is allowing a car to go up or down. And it is tilted diagonally.
True or False: In a pulley is thier a wheel and axle?
True, the string of the pulley sits on the wheel and axle. As the axle spins it allows the wheel to spin with it, therefore allowing the string to move.
How many classes of levers are thier?
Thier are 3 classes of levers the 1st, 2nd, and 3rd.
What are 3 objects that are wedges?
Answers will vary. Student will be given points if 3 correct objects are stated.
Where are 3 places you see objects acting as screws in daily life?
Answers will vary. Students will be given credit if they can correctly name 3 things.
True or False: When going DOWN a hill, you are going down an incline plane.
True, either up or down whichever way it is still considered an incline plane.
True or False: In a wheel and axle does the wheel spins while the axle is stationary?
False, actually the axle spins and the wheel is stationary but because it is attached it spins with the axle but not alone.
What are the classes of levers?
The classes of levers are the 1st, 2nd, and 3rd.
What is the definition of a wedge?
An object driven/placed between 2 different objects to hold or separate them.
What is the difference between a simple and compound machine?
A simple machine is only one of the 6 simple machines while a compound machine is 2 or more of the simple machines.
True or Flase: An Incline plane is horizontal.
False, am inclined plane is actually tipped diagonal.
What is the job of a pulley?
Move a load
When Wreck-it-Ralph smashes the building, his fist is acting as a lever. What class of lever is it acting as?
A first class lever
True or Flase: A hammer can be used as a wedge?
True, a hammer can not only be used as a lever but also a wedge. You can see this when you use a hammer to remove nails.
What is the job of a simple/compound machine?
What are 3 examples of incline planes?
Answers will vary. Student will receive credit if they can correctly name 3.
In what 3 objects can you see a pulley?
Answers will vary, credit will be given if they can correctly state 3 objects.
What are the 3 components of a lever?
The fulcrum, load, and effort.
In the movie Wreck-it-Ralph you see that a nail is being used as a wedge. Where do you see this?
You see this in different places but one example would be the train track nails.
True or False: A light bulb is a screw.
True, the base of a light bulb acts as a screw therefore making it a screw.
What is an incline plane?