Question
A girl is sitting with her dog at the left end of a boat of length 10.0 m. The mass of th girl, her dog and the boat are 60.0 kg, 30.0 kg and 100.0 kg respectively. The boat is at rest in the middle of the lake. Calculate the centre of mass of the system. If the dog moves to the other end of the boat, the girl staying at the same place, how far and in what direction does the boat move?
Answer :
Word Count : 105
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Skip in 10
(Centers of masses are considered relatively to the left end of the boat)
The center of mass of the system is calculated as follows.
After the dog moves to the right, the
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