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## Homework Statement

Lets image the following a boat has three people in it

A has a mass of 120lb

B has a mass of 180lb

C has a mass of 160lb

and the boat has a mass of 120lb

also distance from person A to the front of the boat is 2 feet and distance from person A to person B is 8 feet and distance from person B to person C who is at the end of boat is 8 feet. What is the center of mass of the boat

## Homework Equations

x = (m_1*x_1 + ......+ m_n * x_n)/M

where is the mass of all 3 people and the boat.

## The Attempt at a Solution

the center of mass is then

[tex]x = \frac{120lb \cdot (2) + 180lb \cdot (8) + 160lb \cdot 16 }{120+180+160+120}[/tex]

Is this right?