Question

СРОЧНО!!!!!!! ДАЮ 30 БАЛЛОВ С помощью рычага рабочий поднимает плиту массой 120кг. Какую силу он прикладывает к большому плечу рычага, равному 2,4 м, если меньшее плечо 0,8м?

Answer 1

Ответ:

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Answer 2

Calculating the Force Applied by the Worker

To calculate the force applied by the worker using the lever, we can use the formula for lever mechanics, which is:

Force × Distance = Force × Distance

In this case, the force applied by the worker is the unknown, the distance from the fulcrum to the point where the worker applies the force is the smaller distance (0.8m), and the distance from the fulcrum to the point where the load is located is the larger distance (2.4m).

Using the formula, we can calculate the force applied by the worker.

Calculation

Let's calculate the force applied by the worker using the lever:

Force × Distance = Force × Distance

120kg × 9.81m/s^2 × 0.8m = Force × 2.4m

Solving for Force:

Force = (120kg × 9.81m/s^2 × 0.8m) / 2.4m

Result

The force applied by the worker to lift the 120kg load using the lever is 392.4 Newtons.

This calculation is based on the principles of lever mechanics and the given distances and masses [[1]].