Page 158 - Standard Handbook Of Petroleum & Natural Gas Engineering

Basic Mechanics (Statics and Dynamics) 143

Table 2-2
Centroids of Common Areas [2]
f ji Arm

L

Panbolic area
13

Ppnbolic span-

Example 2-3
A mallet is composed of a section of a right circular cylinder welded to a cylindrical
shaft, as shown in Figure 24a and b. Both components are steel, and the density is
uniform throughout. Find the centroid of the mallet.
r = 2 in. d = 1 in.
L, = 6 in. L, = 5 in.
L, = 1.5 in. y = 0.283 Ib/k3