Simple Machines
What simple machine is a wheel with a rope, chain or belt around it?
Pulley
What is the unit for work?
Joule
Define potential energy.
Stored energy
This type of system uses liquid like oil under pressure in order to do work.
Hydraulics
This is the name for the amount by which a machine can multiply a force.
Mechanical Advantage
The fixed point around which a lever moves.
Fulcrum
What is the formula for work?
Work = Force x Distance
Define kinetic energy.
The energy of motion.
A nail gun uses this type of technology.
Pneumatics
What is decreased so that a person can lie on a bed of nails?
Pressure - the force spread over a large area
This type of simple machine decreases force by increasing the distance to travel.
Inclined Plane
Which of the following is not work?
1. Moving a piano to the second floor with a pulley.
2. Lifting a 350lb weight above your head.
3. Carrying a bag of 20kg groceries to your car.
Lifting a 350lb weight above your head.
Potential or Kinetic?: A parachutist about to jump.
Potential
A bicycle pump uses this kind of technology system to so work.
Pneumatics
This guy is all about the study of fluid pressure.
Blaise Pascal
Name the 6 simple machines.
Lever
Wheel and Axle
Pulley
Inclined Plane
Wedge
Screw
An 800N person is lifted a distance of 9.6m. Calculate the amount of work done in joules.
7680j
Potential of Kinetic?: A skateboarder doing a 360.
Kintetic
The occupation that relies on pneumatics when performing surgery.
Dentist
Force applied to a contained fluid transmits pressure __________ in the container.
equally / evenly
Give an example of each type of lever.
Class 1 - seesaw, scissors, etc.
Class 2 - wheelbarrow, bottle opener, etc.
Class 3 - broom, tweezers, et.
A force of 500N is used to pull an object up an inclined plane. In order to move the object, the total amount of work done was 1500 joules. Calculate the distance the object moved.
3m
Potential or Kinetic?: A climber resting on the side of a cliff.
Potential
Your circulatory system uses the principles of this kind of technology.
Hydraulics
When water is boiled to push pistons and turn wheels.
Steam Engine