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Standard VIII

Physics

Pressure in Fluids

How is thrust...

Question

How is thrust different from pressure?

Thrust is the force per unit area but pressure is the force perpendicular to that area

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Pressure is the force per unit area but thrust is the force perpendicular to that area

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Both are same

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None of these

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Solution

The correct option is B
Pressure is the force per unit area but thrust is the force perpendicular to that area

Force exerted by an object perpendicular to surface area is called thrust. Its SI unit is N. Force exerted by an object per unit area is called pressure. Its SI unit is $N / m^{2}$ .

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Similar questions

Q. Assertion :The pressure at a point is the ratio of force to the area on which force is acting. Reason: Pressure is the thrust acting per unit area.

Q. The force acting perpendicular to the surface is called and the thrust acting per unit area is called .

Statement 1: For the same load/force acting on two different surfaces, more pressure is developed on the surface with a smaller area.
Statement 2: Pressure is defined as thrust(force acting normally to the surface) per unit area.

Q. Thrust per unit area is called pressure.

(a) S.I. unit of moment of force is :

(i) N (ii) N cm (iii) kgf m (iv) N m

(b) To obtain a given moment of force for turning a body, the force needed can be decreased by :

(i) applying the force at the pivoted point (ii) applying the force very close to the pivoted point

(iii) applying the force farthest from the pivoted point. (iv) none of the above.

(i) kgf (ii) kg (iii) g (iv) $m s^{- 1}$

(d) The unit of pressure is :

(i) $N \times m$ (ii) kgf (iii) $N m^{- 2}$ (iv) $k g f m^{2}$

(e) Thr pressure and thrust are related as :

(i) Pressure = Thrust (ii) Pressure = Thrust $\times$ Area

(iii) Pressure = Thrust / Area (iv) Pressure = Area / Thrust

(f) A body weighing 5 kgf, placed on a surface of area 0.1 $m^{2}$ , exerts a thrust on the surface equal to :

(g) The feet of lizards act like :

(i) moving pads (ii) drilling pads (iii) suction pads (iv) none of the above

(h) The pressure exerted by a liquid is due to its :

(i) weight (ii) mass (iii) volume (iv) area

(i) The pressure inside a liquid increases with :

(i) increase in depth (ii) decrease in depth (iii) decrease in density (iv) none of the above

(j) The atmospheric pressure at sea level is nearly:

(i) 10 Pa (ii) 100,000 Pa (iii) 100 Pa (iv) 10,000 Pa

(k) Nose bleeding may occur at a high altitude because :

(i) the atmospheric pressure decreases (ii) the oxygen content of the atmosphere decreases

(iii) the atmospheric pressure increases (iv) there are strong air currents at the high altitude

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How is thrust different from pressure?

The correct option is B Pressure is the force per unit area but thrust is the force perpendicular to that area Force exerted by an object perpendicular to surface area is called thrust. Its SI unit is N. Force exerted by an object per unit area is called pressure. Its SI unit is N/m2.

The correct option is B
Pressure is the force per unit area but thrust is the force perpendicular to that area

Force exerted by an object perpendicular to surface area is called thrust. Its SI unit is N. Force exerted by an object per unit area is called pressure. Its SI unit is $N / m^{2}$ .