3. A 4 m-long canoe will hold 3 campers. A 40 kg camper sits 0.5 m...

Question

Question

Answer 1

Answer #1

3 . x_cm = (m1 v1 + m2 v2 + m3 v2) / (m1+ m2+m3)

we want center of mass at x = 4/2 = 2 m

putting values,

2 = [ (40 x 0.5) + (30 x (4 - 1.5)) + (30 x d)] / (40 + 30 + 30)

d = 3.5 m from end.

or 4-3.5 = 0.5 m from other end.

Ans: (C)

Answer 2

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