15. Rotational Equilibrium

Which method would be most helpful in locating the center of gravity of an irregularly shaped object?

In the context of vehicle dynamics, what is the point where the mass of the vehicle is considered to be concentrated and balanced?

Given a uniform semicircular plate of radius $R$, what is the distance from the flat edge to the centroid of the plate?

In the Earth-Moon system, where is the center of mass ($\mathrm{barycenter}$) located relative to the two bodies?

The famous Leaning Tower of Pisa doesn't topple over because its center of gravity is: $center of gravity$

When Dr. Hewitt holds a broom horizontally by its handle, with the bristles on one end and the handle on the other, where is the $\mathrm{center} \mathrm{of} \mathrm{gravity}$ of the broom located?

A 70 kg, 1.90 m man doing push-ups holds himself in place making 20° with the floor. His feet and arms are, respectively, 1.15 m below and 0.4 m above his center of mass. You may model him as a thin, long board, and assume his arms and feet are perpendicular to the floor. How much force does the floor apply to each of his hands? (Use g=10 m/s².) 

The center of mass of two objects orbiting each other is always which of the following?

Which of the following best defines the center of gravity of a body?

The center of gravity of a $\mathrm{basketball}$ is located _______.

A uniform rod is 2.00 m long and has mass 1.80 kg. A 2.40 kg clamp is attached to the rod. How far should the center of gravity of the clamp be from the left-hand end of the rod in order for the center of gravity of the composite object to be 1.20 m from the left-hand end of the rod?

The three masses shown in FIGURE EX12.15 are connected by massless, rigid rods. Find the coordinates of the center of mass.

The four masses shown in FIGURE EX12.13 are connected by massless, rigid rods. Find the coordinates of the center of mass.

Two balls are connected by a 150-cm-long massless rod. The center of mass is 35 cm from a 75 g ball on one end. What is the mass attached to the other end?

A small 300 g ball and a small 600 g ball are connected by a 40-cm-long, 200 g rigid rod. a. How far is the center of mass from the 600 g ball?