A. Three identical coins, labeled A, B, and C in the figure, lie on three corners of a square 10.0 cm on a side. Determine the x coordinate of each coin, xA, xB, and xC B. Determine the y coordinate of each coin described in Part A: yA, yB, and yC. C. Determine the x and y coordinates xcg and ycg of the center of gravity of the three coins described in Part A.
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
A. Three identical coins, labeled A, B, and C in the figure, lie on three corners of a square 10.0 cm on a side. Determine the x coordinate of each coin, xA, xB, and xC
B. Determine the y coordinate of each coin described in Part A: yA, yB, and yC.
C. Determine the x and y coordinates xcg and ycg of the center of gravity of the three coins described in Part A.
![**Tactics Box 7.1: Finding the Center of Gravity**
1. **Choose an origin for your coordinate system.** You can choose any convenient point as the origin.
2. **Determine the coordinates \((x_1, y_1), (x_2, y_2), (x_3, y_3), \ldots\)** for the particles of mass \(m_1, m_2, m_3, \ldots\), respectively.
3. **The \(x\) coordinate of the center of gravity is**
\[
x_{cg} = \frac{x_1 m_1 + x_2 m_2 + x_3 m_3 + \cdots}{m_1 + m_2 + m_3 + \cdots}
\]
4. **Similarly, the \(y\) coordinate of the center of gravity is**
\[
y_{cg} = \frac{y_1 m_1 + y_2 m_2 + y_3 m_3 + \cdots}{m_1 + m_2 + m_3 + \cdots}
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