Work
Inclined Plane
Lever
Wedge
Simple Machines
100
What is the formula of Work?
Work=Force x Distance (W=FD)
100
What does an inclined plane allow you to do?
It allows you to exert your input force over a longer distance
100
What is a fulcrum?
The fixed point that a lever pivots around
100
What is the definition of a wedge?
A wedge is an object that is thick at one end and tapers to a thin edge at the other end.
100
Name one example of a wheel and axle, pulley, and a screw.
Wheel and axle- Steering wheel Pulley- Flagpoles Screw- Bolt
200
What is the SI unit of work and what is the formula?
The SI unit is a joule and the formula is newton times meter.
200
What is the mechanical advantage of Inclined planes?
Length of incline divided by Height of incline
200
What is the mechanical advantage of a lever?
Distance from fulcrum to input force divided by distance from fulcrum to output force
200
What is the mechanical advantage of a wedge?
Dividing the length of the wedge by its width
200
Name one mechanical advantage of a screw, wheel and axle, or a pulley.
Screw-Length around the threads divided by the length of the screw Wheel and axle-Divide the radius of the wheel by the radius of the axle Pulley- Equal to the number of sections of rope that support the object
300
Is work done when the object does NOT move a distance? Explain
No work is done when the object does not move because the object has to move in order for work to be done
300
The longer and thinner a wedge is, the _______ its mechanical advantage
Greater its mechanical advantage
300
Name two simple machines that are in your body and name the type of simple machine they are.
Your teeth and your muscles and tendons. Your teeth are wedges, while your muscles and tendons are levers.
400
Is work done when you carry an object? Explain.
Work is not done when you carry an object because the force is vertical and the motion is horizontal, so you don't do any work as you carry it.
400
When you use a wedge, which part of the ax exerts a force to the other part of the ax?
The ax handle exerts a force on the blade, which is the wedge on this object.
400
What are the six types of Simple machines?
1.Inclined Plane 2.Lever 3.Wheel & Axle 4.Wedge 5.Screw 6.Pulley
500
What is the definition of a screw, a wheel and axle, and a pulley?
Screw- An inclined plane wrapped around a cylinder Wheel and axle- Simple machine made of two cylindrical or circular objects fastened together that rotate around a common axis Pulley- Simple machine made up of a grooved wheel with a rope or cable wrapped around it
M
e
n
u