Question

Спортсмен тяжелоатлет поднимает штангу массой 150 кг в течение1,5 сек с пола на высоту 2м .Определите мощность развиваемую спортсменом за это время.

Answer 1

N=m*g*h/t=150*10*2/1,5=2000 Вт=2 кВт

Answer 2

Calculation of Power

To determine the power developed by the weightlifter, we can use the formula:

Power = Work / Time

The work done by the weightlifter can be calculated as the product of the force applied and the distance over which the force is applied. In this case, the force is equal to the weight of the barbell, which is 150 kg, and the distance is the height the barbell is lifted, which is 2 meters.

Work = Force x Distance

Substituting the given values:

Work = 150 kg x 9.8 m/s^2 x 2 m

Now, we need to convert the time from seconds to hours, as power is typically measured in watts, which is equal to joules per second. There are 3600 seconds in an hour.

Time = 1.5 seconds / 3600 seconds/hour

Now we can calculate the power:

Power = Work / Time

Power = (150 kg x 9.8 m/s^2 x 2 m) / (1.5 seconds / 3600 seconds/hour)

Let's calculate the power using these values.