Question

Тягач перемещает платформу со скоростью 7,2 км/ч, развивая тяговое усилие 30 кН. Какая работа при этом совершается за время 10 мин

Answer 1

По формуле механической работы для данного равномерного прямолинейного движения:

A = FS = FVt = 25000 Н * 2 м/с * 600 с = 3*10 в 7степ Дж = 30 МДж.

 

Ответ: 30 МДж.

Answer 2

Calculation of Work Done

To calculate the work done by the truck, we can use the formula:

Work = Force × Distance

Given: - Speed of the truck = 7.2 km/h - Traction force = 30 kN - Time = 10 minutes

First, let's convert the speed from km/h to m/s: - 7.2 km/h = 7.2 × (1000 m / 3600 s) = 2 m/s

Next, let's calculate the distance traveled by the truck in 10 minutes: - Distance = Speed × Time = 2 m/s × (10 minutes × 60 seconds/minute) = 1200 meters

Now, we can calculate the work done by the truck: - Work = Force × Distance = 30 kN × 1200 meters = 36,000 kNm

Therefore, the work done by the truck in 10 minutes is 36,000 kNm.

Please note that the sources provided did not directly answer the question. The calculation is based on the given information and the formula for work.

Answer 3

Calculation of Work Done

To calculate the work done by the truck in moving the platform, we can use the formula:

Work = Force × Distance

Given information: - Speed of the truck: 7.2 km/h - Traction force: 30 kN - Time: 10 minutes

To calculate the distance traveled by the truck, we can use the formula:

Distance = Speed × Time

Converting the speed from km/h to m/s: - 7.2 km/h = 7.2 × (1000/3600) m/s = 2 m/s

Converting the time from minutes to seconds: - 10 minutes = 10 × 60 seconds = 600 seconds

Now, we can calculate the distance traveled by the truck: - Distance = 2 m/s × 600 seconds = 1200 meters

Substituting the values into the formula for work: - Work = 30 kN × 1200 meters = 36000 kNm

Therefore, the work done by the truck in moving the platform in 10 minutes is 36000 kNm.