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67 Cards in this Set
- Front
- Back
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Newton's First Law
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aka Law of Inertia.
A body at rest or in uniform Motion will remain at rest or in uniform motion unless some external force is applied to it. |
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Inertia
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The body's reluctance to change whatever its doing (this remaining stationary). Also characterized as the "laziness of an object".
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Mass
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Quantity of matter of which a body is made or composed. It is a quatitative measure of body's inertia
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Unit of Mass
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In kilograms (kg) or grams (g) in the metric and slugs int he English system
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Newton's Second Law
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When a body acted upon by a constant force, its relucting acceleration is proportional to the force applied and inversely proportional to the mass and the acceleration takes place in direction in which the force acts.
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Newton's Third Law
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To every action, there is an equal and opposite reaction.
When a body is at rest or in motion, the state of the body depends upon the reaction forces acting on it and not upon the action forces the body exerts on their bodies. |
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Pound
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a force when applied to a mass of 1 slug. It will produce an acceleration of 1ft/s2.
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Newton
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a force when applied to a mass of 1kg it will produce an acceleration of 1m/s2.
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Weight
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weight and force have both magnitude and direction and are thus vector quantities.
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Mass
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Mass is a scalar quantity because it has magnitude only.
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Newton's 4th Law
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aka Law of Universal Gravitational.
any two bodies attract each other with a force proportional to the product of their masses and universely proportional to the square of the distance between them. |
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Work
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force times the distance through the force acts
w = f x d |
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Mass
ENGLISH |
slugs (s)
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Mass
METRIC |
kilogram (kg)
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Acceleration
ENGLISH |
ft/s2
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Acceleration
METRIC |
m/s
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Force
ENGLISH |
slugft/s2 (pound)
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Force
METRIC |
kgm/s2 (Newton)
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Work
ENGLISH |
ftlb
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Work
METRIC |
mN or (Joules)
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Power
ENGLISH |
ftlb/s
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Power
METRIC |
mN/s or (Joules)
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Potential Energy
ENGLISH |
ftlb
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Potential Energy
METRIC |
mN or Joules
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Kinetic Energy
ENGLISH |
ftlb
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Kinetic Energy
METRIC |
mN or (Joules)
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Power
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the rate at which work is being done or time rate of performing work
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Power (equations)
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power = work/time
power = (f x d)/time power = f (d/t) power = f x v |
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Energy
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the capacity to do work
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6 Forms of Energy
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1. Chemical
2. Electric 3. Heat 4. Light 5. Mechanic 6. Nuclear |
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Torque
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Torque is necessary to produce angular acceleration as force is required to cause linear acceleration (f = ma)
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Torque
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Is produced when when a force is applied off-center to the axis of rotation. Thus causes a rotation of the body
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Torque
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The magnitude is determined by the applied force and the length of the force arm
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Force Arm
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The perpendicular distance or the shortest distance from the axis of rotation to the line of action of the force
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Torque (L)
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= Force (F) x Force Arm (dI)
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Properties of Torque
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1. magnitude of how much turning effect
2.Direction of turning effect 3. Point of Force Application-the point at which the force is being applied to the system. 4. Line of Action Force-the line in which the force is being applied it extends in either direction and provides a reference line for determining the length of the force arm |
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Torque
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The larger thr force applied or the longer the force arm or both the greater the torque produced.
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Force
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For two equal forces applied to a body, the force that has the longer force arm produces the greater torque
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Speed
ENGLISH |
ft/s
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Speed
METRIC |
m/s
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Speed
FORMULA |
s = l/t
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Velocity
ENGLISH |
ft/s
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Velocity
METRIC |
m/s
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Velocity
FORMULA |
v = d/t
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Acceleration
ENGLISH |
ft/s2
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Acceleration
METRIC |
m/s2
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Acceleration
FORMULA |
a = (vf-vi)/(tf-ti)
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Mass
ENLGISH |
slug
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Mass
METRIC |
kilogram (kg)
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Force
ENLGISH |
slugft/s2 (pound)
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Force
METRIC |
kgm/s2 (N)
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Force
FORMULA |
f = ma
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Weight
ENGLISH |
slugft/s2 (pound)
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Weight
METRIC |
kgm/s2 (N)
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Weight
FORMULA |
Fg = mg
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Power
ENGLISH |
ftlb/s
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Power
METRIC |
mN/s (J/s or Watt)
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Power
FORMULA |
p = f(d/t) or f(v)
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Potential Energy
ENGLISH |
ftlb
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Potential Energy
METRIC |
mN (Joule)
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Potential Energy
FORMULA |
PE = mgh or Wh
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Kinetic Energy
ENGLISH |
ftlb
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Kinetic Energy
METRIC |
mN (Joule)
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Kinetic Energy
FORMULA |
KE = 1/2 mv2
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Torque
ENGLISH |
lbft
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Torque
METRIC |
Nm (Joule)
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Torque
FORMULA |
L = f(DI)
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