Question

При подъеме груза на высоту 2 м подъемником совершается работа 2940 Дж. КПД механизма составляет 60%. Какова масса груза?

Answer 1

Ответ:

на фото

Объяснение:

Answer 2

Calculation of the Mass of the Load

To calculate the mass of the load, we can use the formula for work:

Work = Force x Distance

In this case, the work done is given as 2940 J (joules) and the distance is 2 m (meters). We need to find the force applied to the load.

Since the efficiency or mechanical advantage (KPД) of the mechanism is given as 60%, we can use the following formula to calculate the force:

Force = Work / (Distance x Efficiency)

Substituting the given values into the formula:

Force = 2940 J / (2 m x 0.6)

Calculating this expression gives us the force applied to the load.

Please note that the search results provided by You.com did not contain relevant information to directly answer this question. However, we can proceed with the calculation using the given information.