Show:
Forces
Vectors
Mechanical Stress
Fluid Systems
Gears, Pulleys and Winches
100
Newtons
What are the units of force?
100
the arrow / vectors heading
What is direction?
100
the force of pulling something apart along a linear plane The force along a rope, chain or pulley
What is tension?
100
mass divided by volume
What is (the equation for) density?
100
rotational forces
What is torque?
200
The equation for force
What is mass time acceleration?
200
the size of the force / vector the lenght of the arrow
What is magnitude?
200
two forces pushing inwardly
What is compression?
200
a fluid system that uses a liquid as the fluid
What is hydraulic system?
200
A larger input gear and a smaller output gear
What is a reduction in gear ratio?
300
an image to portray a force
What is a vector?
300
the magnitudes and directions of vectors added tail to tip
What is a resultant vector?
300
a mechanical instrument that uses tension from mechanical stress to produce work
What is a spring?
300
a system that uses air or gases as the fluid
What is pneumatic system?
300
A 36 tooth gear spins 5 times and is connected to a 72 tooth gear. The number of times the 72 tooth gear will spin.
What is 2.5 spins?
400
The four energy systems
What are mechanical, fluid, electrical and thermal?
400
the resultant force of a 3 newton force north and a 4 newton force east. (meeting at a 90 degree angle
What is a 5 newton force 30 degrees north of east?
400
the ability of an object to return to its original shape
What is elasticity?
400
The equation for specific gravity
What is density of a substance / density of water?
400
The work done by a person who lifts a 50 gram object (Mass NOT weight), 20 feet into the air.
What is 9800? (50 X 9.8) X 20 = 9800
500
The four things force can do.
What are: start moving / move faster change direction slow down / stop moving change the shape
500
The angle of the normal force off of a slope.
What is the perpendicular (90 degrees) to the slope?
500
The distance a spring will expand if the weight placed upon it doubles.
What is double the change in stretch length?
500
The density of a substance divided by the density of water. The principle that defines whether oil will float on water.
What is specific gravity?
500
The efficiency of a motor that requires 300 joules of energy to drive a car 15 joules forward.
What is 5% efficiency? 15/300 = .05 .05 X 100% = 5%