Question

Масса одного метра рельса равна 32кг. Сколько понадобится железнодорожных вагонов грузоподъемностью 60 т, чтобы перевезти все рельсы, необходимые для постройки одноколейной железной дороги длиной 180 км?

Answer 1

1 км = 1000 м  
180 км = 180 * 1000 = 180000 м
1 тонна = 1000 кг
1) 180000 * 32 = 5760000 кг : 1000 = 5760 тонн рельсов надо перевести
2) 5760 : 60 = 96 вагонов понадобится 

Answer 2

Calculation of the Number of Freight Cars Needed

To calculate the number of freight cars needed to transport all the rails required for the construction of a single-track railway with a length of 180 km, we need to consider the weight of the rails and the carrying capacity of the freight cars.

Given that the mass of one meter of rail is 32 kg, we can calculate the total weight of the rails needed for the entire railway:

Total weight of rails = mass of one meter of rail × length of the railway

Total weight of rails = 32 kg/m × 180,000 m

Now, let's calculate the number of freight cars needed to transport the rails. We are given that the carrying capacity of each freight car is 60 tons (60,000 kg).

Number of freight cars needed = Total weight of rails ÷ Carrying capacity of each freight car

Number of freight cars needed = (32 kg/m × 180,000 m) ÷ 60,000 kg

Let's calculate this:

Number of freight cars needed = (32 × 180,000) ÷ 60,000

Number of freight cars needed = 96

Therefore, 96 freight cars with a carrying capacity of 60 tons each would be required to transport all the rails needed for the construction of a single-track railway with a length of 180 km.

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