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Standard XII

Physics

Acceleration

Blocks A and ...

Question

Blocks A and B have masses of 2 g and 3 kg, respectively. The ground is smooth. P is an external force of 10 N. The force exerted by B on A is:

4 N

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6 N

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8 N

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10 N

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Solution

The correct option is A 4 N
Let common acceleration of the system be $a$ .
$a = \frac{10}{2 + 3} = 2 m s^{-} 2$
Considering the motion of $2 k g$ block,

$P = 2 \times 2 m s^{-} 2$
$P = 4 N$

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Block A and B have masses of 2kg and 3kg respectively. The ground is smooth. Pis an external force of 10N.The force exerted by B on A is

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Blocks A and B have masses of 2 g and 3 kg, respectively. The ground is smooth. P is an external force of 10 N. The force exerted by B on A is:

The correct option is A 4 NLet common acceleration of the system be a.a=102+3=2ms−2Considering the motion of 2kg block,P=2×2ms−2P=4N

The correct option is A 4 N
Let common acceleration of the system be $a$ .
$a = \frac{10}{2 + 3} = 2 m s^{-} 2$
Considering the motion of $2 k g$ block,

$P = 2 \times 2 m s^{-} 2$
$P = 4 N$