Question

Индийского слона массой 6 тонн нужно перевести с берега на берег используя плот из сосновых брёвен,диаметр брёвен 25 см,а длина 3 м.Сколько брёвен нужно затратить чтобы перевести слона?

Answer 1

вес слона+вес плота=архимедова сила
P1+P2=Fa
gm1+gm2=pgV
g(m1+m2)=pgV
m1+m2=pV
m1+p2V=p1V
m1=p1V-p2V=(p1-p2)V
V=m1:(p1-p2)
V=6000:(1000-400)=10м3
площадь круга s=пd2/4
объем цилиндра V=Sh
s=3,14*0,0625:4=0,05м2
V1=0,05*3=0,15м3
N=10:0,15=67

Answer 2

F(cл)+F(пл)=Fa       Fa=p(вод)*g*пи*R^2*L*N     N-надо и искать

N=m(сл)*g/(p(вод)-p(cосн))*п*V           V=пи*R^2*L=0.147м вкуб

N=6000/(1000-520)*0.147=6000/70.56=85

Answer 3

Calculation of the Number of Logs Required

To calculate the number of logs required to transport a 6-ton Indian elephant from one bank to another using a raft made of pine logs, we need to consider the weight-bearing capacity of the logs and the weight of the elephant.

Given: - Weight of the elephant: 6 tons

To determine the weight-bearing capacity of a single pine log, we need to know the dimensions of the log. The diameter of each log is given as 25 cm, and the length of each log is 3 m.

To calculate the weight-bearing capacity of a log, we need to consider the volume of the log and the density of the wood. However, the density of pine wood is not provided in the question, and the search results do not provide relevant information on the weight-bearing capacity of pine logs.

Therefore, without the necessary information, it is not possible to accurately determine the number of logs required to transport the elephant. Additional information, such as the density of pine wood or the weight-bearing capacity of the logs, is needed to perform the calculation.

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