1.

Write true or false for each statement : (a) The S. I. unit of force if kgf. (b) A force always produces both the linear and turning motions. (c) Moment of force = force × perpendicular distance of force from the pivoted point. (d) Less force is needed when applied at a farther distance from the pivoted point. (e) For a given thrust, the pressure is more on a surface of a large area. (g) A man exerts the same pressure on the ground whether he is standing or he is lying. (h) It is easier to hammer a blunt nail into a piece of wood than a sharply pointed nail. (i) The S. I . unit of pressure is Pascal. (j) Water in a lake exerts pressure only at its bottom. (k) A liquid exerts pressure in all directions. (l) Gases exert pressure in all directions. (m) The atmospheric pressure is nearly 105 Pa. (n) Higher we go, greater is the air pressure.

Answer»

Write true or false for each statement :

(a) The S. I. unit of force if kgf.

(b) A force always produces both the linear and turning motions.

(c) Moment of force = force × perpendicular distance of force from the pivoted point.

(d) Less force is needed when applied at a farther distance from the pivoted point.

(e) For a given thrust, the pressure is more on a surface of a large area.

(g) A man exerts the same pressure on the ground whether he is standing or he is lying.

(h) It is easier to hammer a blunt nail into a piece of wood than a sharply pointed nail.

(i) The S. I . unit of pressure is Pascal.

(j) Water in a lake exerts pressure only at its bottom.

(k) A liquid exerts pressure in all directions.

(l) Gases exert pressure in all directions.

(m) The atmospheric pressure is nearly 105 Pa.

(n) Higher we go, greater is the air pressure.


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