Mechanical Engineering :: Engineering Mechanics
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According to Newton's first law of motion,
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The moment of inertia of a square of side (a) about an axis through its centre of gravity is
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The velocity ratio of a single purchase crab winch can be increased by
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The motion of a wheel of a car is
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A.
every body continues in its state of rest or of uniform motion, in a straight line, unless it is acted upon by some external force |
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B.
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 |
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C.
to every action, there is always an equal and opposite reaction |
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D.
none of the above |