Question

трактор перемещает плаформу со скоростью 7,2 км/ч,развивая тяговое усилие 25кН.Какую работу совершает трактор за 10 мин? Прошу помогите....

Answer 1

A=FS=FVt=25000H*2m/c*600c=3*10 в 7 степени=30Дж

Ответ-30Дж

Answer 2

Calculating the Work Done by the Tractor

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

Work (W) = Force (F) × Distance (d)

Given: - Speed of the tractor = 7.2 km/h - Tractive force = 25 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

Now, we can calculate the distance covered by the tractor in 10 minutes: - Distance = Speed × Time = 2 m/s × (10 minutes × 60 seconds/minute) = 2 m/s × 600 s = 1200 meters

Using the given tractive force of 25 kN, we can calculate the work done by the tractor: - Work = Force × Distance = 25,000 N × 1200 m = 30,000,000 joules

So, the work done by the tractor in 10 minutes is 30,000,000 joules.