Solution of task 13.3.19 from the collection of Kepe OE

If the total amount of your purchases from the seller Михаил_Перович more than:
- 200 $ the discount is 15%
- 100 $ the discount is 10%
- 50 $ the discount is 7%
- 20 $ the discount is 5%
- 10 $ the discount is 3%
- 5 $ the discount is 2%
- 1 $ the discount is 1%

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13.3.19
Determine the velocity of the point M of the conical pendulum, which for a thread length OM = 1 m describes a cone with an angle at the vertex? = 45 °.
(Answer 2.63)