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Standard XII

Physics

Applying NLM along 3 Axis

Two blocks of...

Question

Two blocks of mass $4 k g$ and $2 k g$ are placed in contact with each other on a frictionless horizontal surface. If we apply a push of $5 N$ on the heavier mass, the force on the lighter mass will be

2 N

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4 N

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5 N

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none of these

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Solution

The correct option is D none of these
Let $a$ be the acceleration of the system as well as the acceleration of each masses.
here, $(4 + 2) a = 5 \Rightarrow a = \frac{5}{6}$
Thus the force on 2 kg is $= 2 a = 2 \times \frac{5}{6} = 1.67 N$

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Two blocks of mass 4kg and 2kg are placed in contact with each other on a frictionless horizontal surface. If we apply a push of 5N on the heavier mass, the force on the lighter mass will be

The correct option is D none of theseLet a be the acceleration of the system as well as the acceleration of each masses.here, (4+2)a=5⇒a=56Thus the force on 2 kg is =2a=2×56=1.67N

Two blocks of mass $4 k g$ and $2 k g$ are placed in contact with each other on a frictionless horizontal surface. If we apply a push of $5 N$ on the heavier mass, the force on the lighter mass will be

The correct option is D none of these
Let $a$ be the acceleration of the system as well as the acceleration of each masses.
here, $(4 + 2) a = 5 \Rightarrow a = \frac{5}{6}$
Thus the force on 2 kg is $= 2 a = 2 \times \frac{5}{6} = 1.67 N$