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Physics - NLM Question with Solution | TestHub

PhysicsNLMMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

A shell of mass $20 k g$ at rest explodes into two fragments whose masses are in the ratio $2 : 3$ . The smaller fragment moves with a velocity of $6 {m s}^{- 1}$ . The kinetic of the larger fragment is

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Answer:

Solution:

From conservation of momentum,

$∴ m_{1} v_{1} = m_{2} v_{2}$ ( $m_{1} = 3 k g$ & $m_{2} = 12 k g$ )

$∴ 8 \times 6 = 12 \times v_{2}$

$\Rightarrow v_{2} = 4 m / s$

$∴ K_{2} = \frac{1}{2} (12) {(4)}^{2} = 96 J$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:NLMSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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