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12 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Hooke’s Law |
Hooke’s Law states that the magnitude of force F exerted by a spring on a body attached to the spring is proportional to the extension x of the spring from its natural length provided the proportional limit of the spring is not exceeded. |
F=kx |
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Archimedes Principle |
For a body submerged or floating in a fluid, upthrust acting on the body is equal in magnitude and opposite in direction to the weight of fluid displaced by the body. |
U=ρVg |
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Principle of Floatation |
For a body floating in a fluid, weight of the fluid displaced by the body is equal to the weight of the body. |
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Moment |
Moment of a force about a point is the product of the force and the perpendicular distance from the line of action of the force to the point. |
τ = F(r perpendicular) |
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Work done |
Work done by the force on the body is the product of the magnitude of the force F and the displacement s in the direction of the force. |
W=Fscosθ |
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Upthrust |
The net upward force exerted by a fluid on a body fully/partially submerged in the fluid. |
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Translational Equilibrium |
Net external force acting on a body is zero ΣF(ext) = 0 |
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Moment of a force |
The moment of a force is the product of the magnitude of the force and the perpendicular distance of line of action of the force to that point. |
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Rotational Equilibrium |
The net moment about any point is 0 Στ = 0 |
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Principle of momenys |
Principle of moment states that for an object in equilibrium, the sum of anti-clockwise moments and the sum of clockwise moment about any point is zero. |
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Static Equlibrium |
1. Net external force acting on a body is zero. ΣF(ext) = 0 2. Net moment on the body about any point is zero. Στ = 0 |
no change to linear or rotational motion |
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Couple |
A pair of forced, which are equal in magnitude but opposite in direction whose line of action do not coincide. τ due to couple = Fx |
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