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Which of the following statements about force is/are correct? A. Weight is a force that acts vertically downward due to gravity. B. Thrust is a force acting perpendicular to a surface.
Only A
Only B
Both A and B
Neither A nor B
Both A and B
Both statements are correct as they accurately describe fundamental physical forces. Weight is the gravitational force exerted by a planet on an object, always directed towards the center of mass (downward), while thrust is defined as the force acting normal (perpendicular) to a surface.
Both statements are correct as they accurately describe fundamental physical forces. Weight is the gravitational force exerted by a planet on an object, always directed towards the center of mass (downward), while thrust is defined as the force acting normal (perpendicular) to a surface.
Think of weight as the Earth 'pulling' you down into your chair, and thrust as the chair 'pushing' back up against your bottom at a right angle to keep you from falling through.
W-D-G (Weight-Down-Gravity); T-P-N (Thrust-Perpendicular-Normal).
W=mg тАФ Weight calculation formula where m is mass and g is gravity
P=AFthrustтАЛтАЛ тАФ Pressure exerted by thrust where A is the contact area
Weight arises from the gravitational interaction between two masses, defined by W=m├Чg, where g is the acceleration due to gravity. Thrust is a specific case of force that creates pressure, where pressure is defined as P=AFthrustтАЛтАЛ. Since thrust is perpendicular to the area A, it is the active component that determines pressure in fluids and solids.
Weight is a vector quantity with SI unit Newton (N).
Thrust is the cause of pressure in gases and liquids (e.g., upthrust or buoyant force).
The magnitude of weight depends on the local gravitational field strength g.
Understanding these forces helps calculate buoyancy and structural stability in engineering.
Calculating the pressure exerted by a block on a table.
Designing ships that use upthrust to float.
OnEarth, gтЙИ9.8┬аm/s2.
Weight varies with location in the universe, while mass remains constant.
C is correct тАФ Both statements correctly define the physical characteristics of weight and thrust respectively.
Remember that 'Thrust' is just a fancy name for the perpendicular force component. Whenever you see 'perpendicular' in a physics question, think of 'Normal Force' or 'Thrust'.