Simple Machines
Any object that makes work easier
Machine
Determined by the mass and velocity of an object
Momentum
TRUE OR FALSE:
Force is measured in joules.
False, work is measured in joules.
An inclined plane wound around a cylinder or a cone
Screw
Which law of motion is this portraying?
You are sledding and the sled stops when it hits a branch hidden in the snow. You keep moving and slide off the sled.
First Law of Motion
(Object at rest stays at rest; object in motion stays in motion)
Your mom bought a new dishwasher, and your uncle is bringing it to your house with his pickup truck. To put it in place, he will need to bring it up the back steps and through the laundry room to the kitchen. What simple machines will he need to use to move the dishwasher into the kitchen with less effort?
An inclined plane (ramp)
Pulleys arranges as a block and tackle
An appliance dolly as a second-class lever with a wheel and axle and a wedge (the bottom plate)
Consists of a wheel and a rod, or axle, running through the wheel
***BONUS 600 points for correct answer just for fun!**
Wheel and axle
Occurs whenever an object speeds up, slows down or changes direction
Acceleration
TRUE OR FALSE:
Galileo formulated the three laws of motion.
***BONUS 400 points for correct answer just for fun!**
False, Sir Isaac Newton
When a force moves an object a certain distance, this is done.
Work
Which law of motion is this portraying?
It took one student to pick up a box filled with feathers and two students to pick up the same-sized box filled with books.
***BONUS 300 points for correct answer just for fun!**
Second Law of Motion
(Force = Mass X Acceleration)
Two inclined planes placed back-to-back
Wedge
Must sing twinkle twinkle little star
Which law of motion is this?
An object at rest tends to stay at rest, and an object in motion tends to stay in motion with the same direction and speed.
***BONUS 600 points for correct answer just for fun!**
First Law of Motion
TRUE OR FALSE:
The resistance force works against the effort.
True
You must have one person (at least) Orange Justice for your points. If EVERYONE on your team does it, you get double points!
Any bar that turns on a point or fulcrum
Lever
Which law of motion is this portraying?
A rocket is launched, expelling gases downward to the ground, causing the rocket to move upward.
***BONUS 200 points for correct answer just for fun!***
Third law of Motion
(Action and reaction)
Do the wave
Flat, slanted surface, such as a ramp
Inclined plane
Have one person run a lap around the courtyard
Which law of motion is this?
When one object exerts a force on another object, the second object reacts by exerting an equal force back on the first object.
Third Law of Motion
Must successfully do a water bottle flip in 30 sec. to get points
TRUE OR FALSE:
A block and tackle combines multiple fixed and unmovable pulleys.
False, the pulleys are moveable.
Do the chicken dance
What is a compound machine?
Two or more simple machines combined
Do 10 push-ups each
In what way does gravity affect inertia?
***BONUS 100 points for correct answer just for fun!***
Gravity keeps an object from moving in a straight line indefinitely (forever)
A grooved wheel with a chain or rope wrapped in the groove
Pulley
Which law of motion is this?
Force is equal to the mass of an object and its acceleration.
Second Law of Motion
Disco to get points
TRUE OR FALSE:
The decrease in an effort that is needed to move an object is called mechanical advantage.
True
Extra 200 points!
What is the name of the spot where the lever turns?
Fulcrum
Do the Hokey Pokey to get your points
In what way does friction affect motion?
***BONUS 100 points for correct answer just for fun!***
Friction is a force that keeps objects from moving against other objects. Friction works against inertia and helps us to walk.
You must do the robot for 30 seconds