TS EAMCET · Physics · Center of Mass Momentum and Collision
A \(30 \mathrm{~kg}\) boy stands at the far edge of a floating plank, whose near edge is against the shore of a river. The plank is \(10 \mathrm{~m}\) long and weighs \(10 \mathrm{~kg}\). If the boy walks to the near edge of the plank, how far from the shore does the plank move
- A \(7 \mathrm{~m}\)
- B \(8 \mathrm{~m}\)
- C \(7.5 \mathrm{~m}\)
- D \(15 \mathrm{~m}\)
Answer & Solution
Correct Answer
(C) \(7.5 \mathrm{~m}\)
Step-by-step Solution
Detailed explanation
COM of system remains at same position in absence of any external force. Position ( \(x\)-coordinate) of COM initially (taking origin at shore is)…
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