Question

Пожарник массой 80 кг лезет вверх по лестнеце, какую работу он совершит, подняв себя на высоту 6м? Какая мощность развивается при этом?​

Answer 1

A=F×s
80×6=480Дж
.....

Answer 2

Calculation of Work Done:

To calculate the work done by the firefighter while climbing the ladder, we can use the formula:

Work = Force × Distance

The force exerted by the firefighter is equal to their weight, which can be calculated using the formula:

Weight = mass × gravitational acceleration

Given that the mass of the firefighter is 80 kg and the gravitational acceleration is approximately 9.8 m/s², we can calculate the weight:

Weight = 80 kg × 9.8 m/s²

Now, we can calculate the work done by the firefighter by multiplying the weight by the distance climbed. The distance climbed is given as 6 m.

Work = Weight × Distance

Substituting the values, we get:

Work = (80 kg × 9.8 m/s²) × 6 m

Calculating this, we find that the work done by the firefighter while climbing the ladder is approximately 4,704 joules.

Calculation of Power Developed:

Power is the rate at which work is done. It can be calculated using the formula:

Power = Work / Time

However, the time taken by the firefighter to climb the ladder is not provided in the question. Therefore, we cannot calculate the exact power developed by the firefighter without this information.

Please provide the time taken by the firefighter to climb the ladder, and I will be able to calculate the power developed.