Question

Лошадь равномерно тянет телегу со скоростью 0.8 м|с прилагая усилие 400 H. Какая работа совершается при этом за 2 ч?

Answer 1

Calculation of Work Done

To calculate the work done by the horse in pulling the cart, we can use the formula:

Work = Force x Distance

In this case, the force applied by the horse is 400 H (Horsepower) and the distance traveled is given by the product of the speed and time.

Given: - Speed = 0.8 m/s - Time = 2 hours

First, we need to convert the time from hours to seconds, as the speed is given in meters per second. There are 3600 seconds in one hour, so 2 hours is equal to 2 * 3600 = 7200 seconds.

Next, we can calculate the distance traveled by multiplying the speed by the time:

Distance = Speed x Time = 0.8 m/s x 7200 s = 5760 meters

Finally, we can calculate the work done by multiplying the force by the distance:

Work = Force x Distance = 400 H x 5760 m = 2,304,000 Joules

Therefore, the work done by the horse in pulling the cart for 2 hours is 2,304,000 Joules.