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Q: What is the force acting perpendicular to plane?
  • A. Upthrust
  • B. Abusive
  • C. Pressure
  • D. Pull
Correct Answer: Option A - A force acting perpendicular to a plane is called a buoyancy force or upthrust force. The property of a fluid, due to which it exerts an upward force on objects, is called uplift/buoyant force. This force acts on the centroid of the volume of fluid displaced by objects, which is called the centre of buoyancy. It was first studied by Archimedes.
A. A force acting perpendicular to a plane is called a buoyancy force or upthrust force. The property of a fluid, due to which it exerts an upward force on objects, is called uplift/buoyant force. This force acts on the centroid of the volume of fluid displaced by objects, which is called the centre of buoyancy. It was first studied by Archimedes.

Explanations:

A force acting perpendicular to a plane is called a buoyancy force or upthrust force. The property of a fluid, due to which it exerts an upward force on objects, is called uplift/buoyant force. This force acts on the centroid of the volume of fluid displaced by objects, which is called the centre of buoyancy. It was first studied by Archimedes.