Work
Inclined Plane
Lever
Wedge
Simple Machines
100
What is the formula to solve for work?
Work=force x distance
100
what are three examples of an Inclined Place
ramp, ladder against a house, road going up a mountain
100
what are three examples of a lever
wheelbarrow, hammer, crowbar
100
is a crowbar considered a wedge. Explain
yes because it wedges in between objects to pry them open
100
what are the six types of Simple Machines
Inclined place, Pulley, Lever, Wheel and Axle, Wedge, Screw
200
Is carrying a 5 pound brick up a flight of stairs work? Explain.
No because the force doesn't move in the same forward motion as you do
200
If i ride my bike down a hill is that hill an inclined plane
yes
200
If i use a board on a block and put a brick on one side and i push down on the other it that board being used as a lever? Explain
yes because the board is moving the object
200
what are four examples of a wedge
ax, knife, zipper, teeth
200
what is a Simple Machine made up of a grooved wheel with a rope or cable wrapped around it
pulley
300
how much work was done by holding a 15 newton sack of potatoes and waiting in line at Walmart for 3 minutes. How many joules of work were done?
0 joules
300
if you ride your bike over a hump is that hump an inclined plane. Explain
yes because the hump is slanted on both sides
300
how many simple machines are on a hammer and what are they
two a lever and a wedge
300
Is the back end of the hammer a wedge? Explain
yes because it wedges in between the nail and the wood to pull the nail out
300
What Simple Machine is made up of two circular or cylindrical objects fastened together that rotate around a common axis
wheel and axle
400
If my car is stuck in the snow and for two hours i pushed with all my might on it and i never got it moved did i do work? Explain
no because the car never moved from one place to another
400
If i go down an inclined plane with a cart full of toys does the weight change if i go up it? Explain
no because the weight will always be the same the force you will need will change but not the weight
400
If im playing baseball and i "bunt" the ball is the bat considered a lever? Explain.
yes because the bat is like an extension of your arm and your arm has a fulcrum
400
If an ax is cutting threw wood where is the imput and output force
The input force is the weight of the ax hitting the wood and the wood splitting is the output force
400
An inclined plane wrapped around a cylinder is an example of what Simple Machine
screw
500
when force is measure in newtons and distance in meters, the SI unit for work is what
joule
500
If i stand on a table and two legs snap is it considered an inclined plane or no? Explain.
yes because it is slanted and not flat
500
On a lever there is a fulcrum. What is the definition for a fulcrum?
The fixed point that a lever pivots around
500
Your teeth are examples of a wedge and they are called what
incisors
500
what do machines do
machines make wok easier and they change the amount of force you exert or the distance you exert it.
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