Dynamics Flashcards

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1
Q

Define tension.

A

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.

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2
Q

Define compression.

A

The decrease in length of an object when a compressive force is exerted on it.

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3
Q

Define friction.

A

The resistive force on an object that is caused by two surfaces being in contact and that acts in the opposite direction to motion.

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4
Q

Define the normal contact force.

A

The normal contact force is reaction force exerted by a surface on an object, which acts perpendicular to the surface.

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5
Q

Define lift.

A

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.

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6
Q

Define the Newton.

A

One newton is the force that causes 1kg to have an acceleration of 1ms^-2 in the direction of the force.

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7
Q

Define weight.

A

Gravitational force acting on an object, proportional to its mass. On Earth: W=mg.

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