An imposed force that is in motion, that is, one that may vary in magnitude, sense, and direction.


Related Terms

CENTRE OF BUOYANCY

The center of the area of the underwater transverse or longitudinal section of a hull at a particular trim, hence the point at which the force of buoyancy is regarded to be acting vertically upwards.

PNEUMATIC CONTROL VALVE

A valve in which the force of compressed air against a diaphragm is opposed by the force of a spring to control the area of the opening for a fluid stream.

PLATE TOWER

A distillation tower along the internal height of which is a series of transverse plates (bubble-cap or sieve) to force intimate contact between downward flowing liquid and upward flowing vapor.

PISTON GAGE SEE FREE-PISTON GAGE. PISTON METER

A variable-area, constanthead fluid-flow meter in which the position of the piston, moved by the buoyant force of the liquid, indicates the flow rate. Also known as piston-type area meter.

PINCH GRASP

A grasp by the human hand that involves the thumb and the facing side of the index finger at the knuckle; used to apply a large force to a small object. Also known as key grasp.

PHOTOELECTROMOTIVE FORCE

Electromotive force caused by photovoltaic action.

OUNCEDAL

A unit of force equal to the force which will impart an acceleration of 1 foot per second per second to a mass of 1 ounce; equal to 0.0086409346485 newton.

NEWTON'S LAW OF GRAVITATION

The law that every two particles of matter in the universe attract each other with a force that acts along bombardment is recorded. neutron logging See neutron well logging.

NEWTON-METER OF TORQUE

The unit of torque in the meter-kilogram-second system, equal to the torque produced by 1 newton of force acting at a perpendicular distance of 1 meter from an axis of rotation. Abbreviated N-m.

MOMENT SENSOR

A device that measures the force applied at a remote point in a robotic system.

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