A boy of mass m = 50 kg stands at the end A of a flat plank AB of wood of mass M=100 kg and length I= 10 m floating in the still water in a lake. The end B of the plank is at a distance of 30 m from the shore of the lake as shown in Fig. 8.10. The boy walks a distance of 6 m on the plank towards the shore. How far is the boy from the shore now? Neglect viscosity of water. Plank Shore B A 30 m 10 m (x = 0) Fig. 8.10
A boy of mass m = 50 kg stands at the end A of a flat plank AB of wood of mass M=100 kg and length I= 10 m floating in the still water in a lake. The end B of the plank is at a distance of 30 m from the shore of the lake as shown in Fig. 8.10. The boy walks a distance of 6 m on the plank towards the shore. How far is the boy from the shore now? Neglect viscosity of water. Plank Shore B A 30 m 10 m (x = 0) Fig. 8.10
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Transcribed Image Text:A boy of mass m = 50 kg stands at the end A of a flat
plank AB of wood of mass M= 100 kg and length 1 =
10 m floating in the still water in a lake. The end B of
the plank is at a distance of 30 m from the shore of the
lake as shown in Fig. 8.10. The boy walks a distance
of 6 m on the plank towards the shore. How far is the
boy from the shore now? Neglect viscosity of water.
Plank
Shore
B
A
30 m
10 m
(x = 0)
Fig. 8.10
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