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Physics - NLM Question with Solution | TestHub

PhysicsNLMMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

A force $F = 2 t^{2}$ is applied to the cart initially at rest. The speed of cart at $t = 5 s$ is -

Options:

Answer:

Solution:

$F = 2 t^{2}$

$\Rightarrow m \frac{d v}{d t} = 2 t^{2}$

$\Rightarrow 10 \int_{0}^{v} d v = 2 \int_{0}^{5} t^{2} d t$

$\Rightarrow 10 v = 2 {(\frac{t^{3}}{3})}_{0}^{5}$

$\Rightarrow v = 8.33 m s^{- 1}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:NLMSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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