A small washer slides from the top of a smooth fixed hemisphere without an initial velocity, compared to a hemisphere. Find the ratio of the tangential acceleration of the washer to the acceleration of gravity at the moment when the pressure force of the washer in the hemisphere decreases by 1.5 times compared to the pressure force at the top.

Detailed solution with a brief record of the conditions, formulas and laws used in the decision, the conclusion of the calculation formula and the answer.
If you have any questions about the decision, write. I will try to help. File in image format.