A force that is experienced by any rope, string, cable or wire that is being pulled, hung, rotated or supported.
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Normal Contact Force (Reaction Force)
The force that acts perpendicular to the point of contact of a body and the surface with which it is in contact.
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Upthrust
The upwards force that a liquid or gas exerts on a body floating in it due to the water displaced.
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Friction
Occurs between two surfaces in contact with one another and is caused by interatomic and intermolecular forces when surfaces are in contact.
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Drag
A force that opposes the motion taking place when an object is moving through a fluid.
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Equilibrium
When all forces acting on an object in the same plane (coplanar forces) are balanced - there is zero net or resultant force, or, in terms of motion, the object is either stationary or is travelling at constant velocity
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Moment of Force (Turning Moment)
The product of a force and the perpendicular distance of its line of action from the point or axis.
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Principle of Moments
For an object to be in rotational equilibrium, the sum of the clockwise moments must equal the sum of the anticlockwise moments.
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Couple
Occurs when two equal, parallel forces act in opposite directions to produce a rotation.
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Centre of Mass
The single point at which all of the mass of the object can be assumed to be situated.
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Centre of Gravity
The single point through which the entire weight of the object can be thought to act.
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Density
Mass per unit volume
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Archimedes' Principle
The upward buoyant force (upthrust) exerted on an object immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the object displaces.
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Pressure
Force per unit area at right angles to the area.
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Other cards in this set
Card 2
Front
The force that acts perpendicular to the point of contact of a body and the surface with which it is in contact.
Back
Normal Contact Force (Reaction Force)
Card 3
Front
The upwards force that a liquid or gas exerts on a body floating in it due to the water displaced.
Back
Card 4
Front
Occurs between two surfaces in contact with one another and is caused by interatomic and intermolecular forces when surfaces are in contact.
Back
Card 5
Front
A force that opposes the motion taking place when an object is moving through a fluid.
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