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9 Cards in this Set
- Front
- Back
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Center of Mass
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Xcm = m1x1+m2x2+m3x3/m1+m2+m3
x=0 - reference point |
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Center of Gravity
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point at which total gravitational force can be considered to act
Xcg = w1x1+w2x2+w3x3/w1+w2+w3 |
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Uniform Circular Motion
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Motion of the object that moves along a circular path with constant speed (NOT velocity)
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Velocity of UCM
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velocity is constantly changing (vector), always tangent to the circle
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Centripetal acceleration
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Ac= v^2/r, always points toward the center of the circle, perpendicular to velocity
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Centripetal force
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F = m* v^2/r
vector sum of all the forces |
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Torque
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Measure of forces effectivenes to accelerate object rotationally
torque = rFsin theta torque = lF, l - lever arm |
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Translational equilibrium
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state of the system if forces cancel
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Rotational Equilibrium
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state of the system if torques cancel
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