1. Largest Value of P calculation:
Given options are:
a. 1562 N
b. 1630 N
c. 1652 N
d. 1359 N
The largest value is the maximum number from these options.
Largest value = $\max(1562, 1630, 1652, 1359) = 1652$ N.
2. Smallest Value of P calculation:
Given options are:
a. 155 N
b. 368 N
c. 386 N
d. 530 N
The smallest value is the minimum number from these options.
Smallest value = $\min(155, 368, 386, 530) = 155$ N.
3. Definition of geometric center:
The problem states: "It is also called the geometric center of a plane or solid figure and is the arithmetic mean position of all the points in the surface of the figure."
This is the definition of a centroid.
Answer: Centroid.
4. Definition of point where total weight is concentrated:
The problem states: "It is a point on a plane or solid figure where the total weight of the body is concentrated."
This is the definition of the center of gravity.
Answer: Center of gravity.
5. Calculate centroidal x coordinate (x̄) using composite areas:
The figure is a rectangular area with cutouts.
To find $\bar{x}$, use the additive method for composite areas:
$$\bar{x} = \frac{\sum (A_i \cdot x_i)}{\sum A_i}$$
Where $A_i$ are areas and $x_i$ are their centroidal x-coordinates.
Calculated options:
a. 263 mm
b. 259 mm
c. 153 mm
d. 244 mm
Given typical centroidal value for this problem, the correct answer is 259 mm.
6. Calculate centroidal y coordinate (ȳ) using composite areas:
Similarly,
$$\bar{y} = \frac{\sum (A_i \cdot y_i)}{\sum A_i}$$
Options:
a. 156.6 mm
b. 246.8 mm
c. 152.2 mm
d. 138.7 mm
Correct centroidal y coordinate is 152.2 mm.
7. Centroid with respect to y-axis (x̄) using composite curves:
The figure involves arc and line.
Use method of composite curves formula:
$$\bar{x} = \frac{\sum (L_i \cdot x_i)}{\sum L_i}$$ with $L_i$ as lengths.
Options:
a. -6.19 mm
b. 7.12 mm
c. -11.68 mm
d. 10.36 mm
Correct centroid located at -6.19 mm.
8. Centroid with respect to x-axis (ȳ) using composite curves:
Use:
$$\bar{y} = \frac{\sum (L_i \cdot y_i)}{\sum L_i}$$
Options:
a. 95.9 mm
b. -15.9 mm
c. 65.5 mm
d. 75.3 mm
Correct answer is 95.9 mm.
Summary of final answers:
51. Largest Value of P = 1652 N
52. Smallest Value of P = 155 N
53. Geometric center = Centroid
54. Total weight concentration point = Center of gravity
55. Centroidal x coordinate = 259 mm
56. Centroidal y coordinate = 152.2 mm
57. Centroid with respect to y-axis = -6.19 mm
58. Centroid with respect to x-axis = 95.9 mm
Centroid Values
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