# What Is Thrust In Physics?

Newton’s third law quantifies thrust as a reaction force. When a system evacuates or accelerates mass in one direction, the accelerated mass causes an equal magnitude force to be applied in the other direction.

If you’ve been swimming, you may feel your weight has decreased. It is because any fluid acts upward on a submerged body. It is referred to as thrust.

This force is directed in the opposite direction of gravity. As a result, the overall force pulling down on the object owing to gravity is diminished, and you feel that your weight has decreased.

Thrust is another term for the force exerted on a surface in a direction perpendicular to or normal to the surface.

Force, and hence thrust, is measured in newtons (symbol: N) and is defined as the quantity required to accelerate 1 kilogram of mass 1 meter per second. Static thrust is a term used in mechanical engineering to describe a force orthogonal to the primary load.

Thrust is the force that keeps moving an airplane through the air. Thrust is used to decrease an airplane’s drag and a rocket’s weight. The aircraft’s engines produce thrust via some propulsion system.

## Examples Of Thrust In Real-life

When an object is dipped in a liquid, some of its weight is lost. This occurs due to the liquid exerting an upward pull on the item, reducing the net downward force. This upward force acts perpendicular to the liquid-immersed object’s surface. Additionally, it is referred to as upthrust.

When we secure a drawing pin to a display board, we apply a force parallel to the display board’s surface.

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