a) When empty, a 286 kg rowboat is symmetrical. A boy of mass 89.2 kg sits 1.2 m

Question

a) When empty, a 286 kg rowboat is symmetrical. A boy of mass 89.2 kg sits 1.2 m from the center of mass of the rowboat toward the front of the boat, and a girl of mass 67.9 kg sits 2.43 m from the center of mass of the rowboat toward the rear of the boat. Find x, distance from center mass of the empty rowboat to the center of mass of the rowboat-plus-kids system.
NOTE: Give the answer as a positive number.
1 m

b) A system consists of 3 masses on Cartesian coordinates:

m1 = 980 g at (3.69 cm, 0.48 cm)
m2 = 360 g at (5.19 cm, -7.92 cm)
m3 = 918 g at (-2.94 cm, -2.49 cm)

Find the coordinates of the center of mass of this system.
xcm = 2 cm
ycm = 3 cm

Explanation / Answer

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