A construction worker with the help of a movable – fixed block system lifts up a bucket of mortar.

A construction worker with the help of a movable – fixed block system lifts up a bucket of mortar. What is the mass of the bucket if the worker pulls the rope with a force of 120 N?

Given:

F = 120 Newton – the force with which the worker pulls the bucket of solutions using the system of movable – stationary blocks.

It is required to determine m (kilogram) – the mass of the bucket.

Since the problem statement is not specified, the mass of the block system itself is not taken into account. In addition, we assume that the worker lifts the bucket evenly. Then, taking into account the fact that the movable block gives a gain in strength twice, we get:

2 * F = m * g, where g = 9.8 Newton / kilogram;

m = 2 * F / g;

m = 2 * 120 / 9.8 = 240 / 9.8 = 24.5 kilograms (the result has been rounded to one decimal place).

Answer: the mass of the bucket with the solution is 24.5 kilograms.