Question

Міська рада ухвалила рішення заасфальтувати двохсотметрову прямолінійну ділянку шляху завширшки 15 м. Товщина асфальту на цій дорозі має бути 5 см. Скільки машин асфальту потрібно для виконання цих робіт, якщо густина асфальту дорівнює 2,4 т/м 3, а вантаж­ ність машини - 5 т?

Answer 1

Ответ:

Объяснение:

1, сколько потребуется материала для асфальтирования дорожки

( Расчет объема )

V= L*b*h

L = 200 m. - длина

b = 15 m. - ширина

h = 5 cm= 0,05 m. высота

V = 200 *15*0,05 = 150 m^3

2) расчет массы требуемого материала

М= р*V

p - плотность = 2,4 т/м^3

М = 150 * 2,4 = 360 т

3. Расчет количества машин N.

N = M / m

m - грузоподъёмность одной = 5

N = 360/5 = 72 шт. Потребуется

Answer 2

To calculate the number of trucks needed to complete the asphalt work, we need to determine the volume of asphalt required and then divide it by the carrying capacity of each truck.

Calculating the Volume of Asphalt:

The given road section is 200 meters long, 15 meters wide, and the asphalt thickness should be 5 centimeters. To calculate the volume of asphalt needed, we can use the formula:

Volume = Length x Width x Thickness

Converting the measurements to meters, we have: Length = 200 meters Width = 15 meters Thickness = 5 centimeters = 0.05 meters

Plugging in the values, we get: Volume = 200 meters x 15 meters x 0.05 meters = 150 cubic meters

Determining the Number of Trucks:

To determine the number of trucks needed, we need to divide the volume of asphalt by the carrying capacity of each truck.

The given density of asphalt is 2.4 tons per cubic meter (t/m^3), and the carrying capacity of each truck is 5 tons.

Converting the volume of asphalt to tons, we have: Volume = 150 cubic meters Density = 2.4 t/m^3

Plugging in the values, we get: Volume in tons = 150 cubic meters x 2.4 t/m^3 = 360 tons

To calculate the number of trucks needed, we divide the volume in tons by the carrying capacity of each truck: Number of trucks = Volume in tons / Carrying capacity of each truck Number of trucks = 360 tons / 5 tons = 72 trucks

Therefore, to complete the asphalt work on the 200-meter road section with a width of 15 meters and a thickness of 5 centimeters, approximately 72 trucks would be needed, assuming each truck has a carrying capacity of 5 tons and the density of asphalt is 2.4 t/m^3.

Please note that these calculations are based on the given information and assumptions.