Thrust

When we walk on sand we leave our foot prints in the sand. This is due to the weight of our body which acts normal to the surface of contact – the foot and sand. Similarly when we want to stick a picture in a scrap book we apply a force normal to the surface of the paper. Such force acting normally on a surface is called thrust. Thus, the net force acting normal to a surface is called thrustThrust is a vector quantity.

Definition of thrust

Thrust – Total force acting perpendicular to the surface.

Unit of thrust

Si unit of thrust : newton (N)

C.G.S unit of thrust : dyne

Thrust is also expressed in kgwt or gwt or kgf.

1 kgwt = 9.8 N

1 gwt = 980 dynes

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