Dynamics Flashcards
Define tension.
A force caused by two or more pulling forces acting on an object in opposite directions. The forces act to try and stretch the object.
Define compression.
The decrease in length of an object when a compressive force is exerted on it.
Define friction.
The resistive force on an object that is caused by two surfaces being in contact and that acts in the opposite direction to motion.
Define the normal contact force.
The normal contact force is reaction force exerted by a surface on an object, which acts perpendicular to the surface.
Define lift.
A force caused by the flow of fluid around an object, which acts perpendicular to the fluid flow. Most often, lift acts in the upwards direction.
Define the Newton.
One newton is the force that causes 1kg to have an acceleration of 1ms^-2 in the direction of the force.
Define weight.
Gravitational force acting on an object, proportional to its mass. On Earth: W=mg.
