7. What is the moment of inertia related to central axis A of a uniform solid pyramid of mass M and height h, with a square bottom of side L, as shown in figure 2. (A) 0.4MI3/h； (B) 0.2MLh； (C)0.1ML2, (D) 0.1MLh； (E) 0.2ML2.

7. What is the moment of inertia related to central axis A of a uniform solid pyramid of mass M and height h, with a square bottom of side L, as shown in figure 2.
(A) 0.4MI³/h；
(B) 0.2MLh；
(C)0.1ML²,
(D) 0.1MLh；
(E) 0.2ML².

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統計： A(0), B(2), C(1), D(0), E(0) #2740285

詳解 (共 1 筆)

助人為本

B1 · 2026/07/04

#7430220

所以可以先用刪去法去掉不是ML^2

所以這題要考我們的就是正方形的底面

繞中央對稱軸A的轉動慣量

所以如果用水平切片法來想

10. A piston system containing 1 mole of ideal gas in a 10 liter volume initially. The system is put in thermal contact with the environment at 20℃ and 1 atm of pressure. The piston is then released and the volume expands slowly in a quasi-static manner. The temperature is maintained at 20℃ during the whole process. The expansion stops when the pressure inside the piston reaches 1 atm. What is the volume of the gas chamber after the expansion? (The universal ideal gas constant, R, is 0.082 Liter-atm/K/mole.)(A) 24.1 liter； (B) 22.1 liter； (C)18.4 liter； (D) 16.9 liter； (E) 12.3 liter.

7. What is the moment of inertia related to central axis A of a uniform solid pyramid of mass M and height h, with a square bottom of side L, as shown in figure 2.
(A) 0.4MI³/h；
(B) 0.2MLh；
(C)0.1ML²,
(D) 0.1MLh；
(E) 0.2ML².

詳解 (共 1 筆)

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