276. Two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are.
277. The point, through which the whole weight of the body acts, irrespective of its position, is known as
279. The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as
280. The minimum force required to slide a body of weight W on a rough horizontal plane is
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