How much work is done on an object when applying 30N of force for 30 meter?
900j
100
Is it easier to go up a ramp or go up a steep ladder? Explain.
It's easier to go up a ramp then a steep ladder because the longer the sloped surface the less force you exert.
100
If the fulcrum is gone then is a lever a lever? explain.
No, this would not be a lever. A lever is a sturdy bar that rotates around a fix point(fulcrum). If there isn't a fulcrum then it isn't a lever.
100
Out of these choices which is not a wedge.
1. Ax
2. Zipper
3. Book
4. Knife
3. Book
100
Name the six different types of simple machines.
Inclined plane
Lever
Wedge
Wheel and axle
Screw
Pulley
200
How is work done?
Work is done when you exert a force on a object and it moves some distance. Work is also done when a object moves in the same direction in which the force was appied
200
If a flat surface is suddenly sloped is it a inclined plane? Explain how you got your answer.
Yes, and inclined plane is a sloped surface so the now sloped surface is a inclined plane.
200
Where is the fulcrum on a first-class lever?
It can be close to the output force to increase force and/or closer to the input force to increase distance.
200
What is the definition of a wedge?
A device that is thick at one end and tapers to a thin edge at the other end.
200
What do simple machines do?
They make work easier.
Simple machines change the amount of force you exert or the distance over which you exert the force.
300
If you pick up a book and carry it across a room is that work? explain.
When you pick up a object you are doing work, but when you carry it across the room the motion is horizontal and the force is vertical so it is not work when you carry a object.
300
If you walk across a 3 meter ramp then walk up a steep hill that is 2 meters, which of the two do you exert more force. Explain.
The steep hill, since the distance is less from the bottom of the hill to the top you exert more force.
300
Give the definition of a fulcrum then tell the definition of a lever.
Fulcrum- the fixed point that a lever pivots around.
Lever- a rigid/sturdy bar that is free to pivot on a fixed point.
300
Choose which one that isn't an example of a wedge being used, then explain.
1. Putting a doorstop in the door.
2. Chopping wood
3. Using scissors to cut hair.
4. Zipping up your jacket.
3. Using scissors to cut hair.
Scissors are levers not wedges.
300
In your body explain what makes up the levers.
Most levers in your body are made up of bones and muscles. Your muscles are attached yo your bones with tendons. Your tendons and muscles pull on your bones, making them work as levers. The joint acts as the fulcrum.
400
If you have a box that weighs 2,000 lbs and you push it 5M exerting 596N what work have you done? and explain the formula you used to get your answer.
2980j. I used the formula WORK=FxD
WORK= 596N x 5M=
2980j
400
What is the definition of an inclined plane?
An inclined plane is a flat sloped surface.
400
If a lever doesn't have a fulcrum to piviot on then is it still a lever explain.
No. If there is no pivot point/fulcrum then there isn't a lever.
400
Is your binder a wedge? Explain.
Yes. There is a thick end(the spine) and the thin end (the opening).
400
What is the definition of a screw?
An inclined plane wrapped around a cylinder.
500
If you push a shelf and it doesn't move, is that work? Explain why or why not that is work.
If you exert a force on a object and the object doesn't move, no work is done, no matter how much force is applied.
500
Is an inclined plane limited to just a ramp as a example? Explain(don't mention other examples in your answer)
No, an inclined plane can be a lot of things besides a ramp. The ramp is just the most common.
500
If the fulcrum is close to the output force then the lever increases...
It increases force.
500
What is an axe(for example of a wedge) primary purpose?
To spit a object in two.
500
What is the definition of wheel and axle and pulley and how they are alike.
Wheel and axle- sple machine made up of two circular or cylinder objects fastened together and rotate around a common axis.
Pulley- simple machine made up of grooved wheel with rope or cable wrapped around it.
They are alike because both have wheels and a pulley as a sort of axle too.