Physics - Center of Mass Question with Solution | TestHub

PhysicsCenter of MassMotion of centre of massEasy2 minPYQ_2022

PhysicsEasyinteger

A man of $60 kg$ is running on the road and suddenly jumps into a stationary trolly car of mass $120 kg$ . Then the trolly car starts moving with velocity $2 {m s}^{- 1}$ . The velocity of the running man was _____ $m s^{- 1}$ , when he jumps into the car.

Answer:

Solution:

Applying conservation of the momentum,

$m_{m} u = (m_{m} + m_{t}) v \Rightarrow 60 u = (60 + 120) \times 2 \Rightarrow u = 6 m s^{- 1}$

Stream:JEESubject:PhysicsTopic:Center of MassSubtopic:Motion of centre of mass

⏱ 2mℹ️ Source: PYQ_2022

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