Work is done when you exert (apply) a force on an object that causes the object to move some distance. Work is done when the object moves in the same direction in which the force is exerted (applied).
100
Which one of these three simple machines are an Inclined Plane?
A.) Knife B.) Ramp C.) Light Bulb
B.) Ramp
100
What is the fixed point that a lever pivots (rotates) around?
A lever pivots (rotates) around a fulcrum.
100
How can your front teeth be used as a Wedge?
By producing enough force to split an apple with your teeth.
100
What is a Screw?
An Inclined Plane wrapped around a cylinder.
200
Is work done when you push an object and it does not move?
No because you have to apply a force that causes the object to move a distance. The objects direction has to move in the same direction as the force applied.
200
What is an Inclined Plane?
An Inclined Plane is a flat sloped surface.
200
What is a Lever?
A rigid (sturdy) bar that is free to pivot (rotate) on a fixed point.
200
What is a Wedge?
A Wedge is device that is thick at one end and tapers to a thin edge at the other end.
200
What is a Pulley?
A Simple Machine made up of a grooved wheel with a rope or cable wrapped around it.
300
What is the formula of work?
Work=Force x Distance (w=fd
300
How do you calculate the mechanical advantage of an Inclined Plane?
Length of incline/Height of incline
300
How can a Screw Driver be used as a lever?
By opening a paint can.
300
Which one of these three Simple Machines is a Wedge?
A.) Ramp B.) Door Handle C.) Knife
C.) Knife
300
What is a Wheel and Axle?
It is a Simple Machine made of two circular or cylindrical objects fastened together that rotate around a common axis.
400
To move a car 5 meters you have to exert a force of 5000 Newtons. How much work did you do on the car? (Example)
25000 Joules.
400
True or False? The longer the incline, the less input force you need to push or pull an object. Explain
True because an Incline Plane increases the force you exert.
400
Which one of these three Simple Machines is a Lever?
A.) Light Bulb B.) Wheelbarrow C.) Door Handle
B.) Wheelbarrow
400
True Or False? Does a thin long Wedge cut through things faster? Explain
False because the Wedge has to be thick and short. But this only works if you apply more force. A thin long Wedge will be easier to drive in, but it will take longer to cut through.
400
Which of these three Simple Machines are a wheel and axle?
A.) Steering Wheel B.) Jar Lid C.) Hammer
A.) Steering Wheel
500
Is work being done when you are carrying something?
No. Because the direction of the force apples is not in the same direction as the objects motion.
500
How does the Incline Plane work?
An Inclined Plane allows you to exert your input force over a longer distance. As a result, the input force need is less than the output force.
500
What does the tendons and muscles pull on making them work as Levers?
Your bones.
500
How can you find the Mechanical Advantage of a Wedge?
By dividing by the length of the Wedges slope, by the width.
500
Name one Simple Machine from each group: Pulley and Screw.
(Answers May Very)
Pulley: Flagpole or Crane.
Screw: Screw, Bolt, Light Bulb, or a Jar Lid.