Laws of MotionHard

Question

A force produces an acceleration of 4 ms-2 in a body of mass m1 and the same force produces an acceleration of 6 ms-2 in another body of mass m2. If the same force is applied to (m1 + m2), then the acceleration will be:

Options

A.10 ms-2
B.2 ms-2
C.2.4 ms-2
D.5.4 ms-2

Solution


F = m1 4        [Newton′s II law for m1]    
F = m2 6            [Newton′s II law for m2]
F = (m1 + m2)a         [Newton′s II law for (m1 + m2)]
⇒    F =         ⇒    1 =         ⇒    a = 2.4 m/s2.

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