Solution of the D1 Option 03 Dievskaya VA Malyshev IA

Solution of the D1 Option 03 Dievskaya VA Malyshev IA

Solution of the D1 3. The traction force helicopter rotor mass m in vertical rise from rest in 1.5 times its weight. The air resistance is proportional to the rate R = -0,7tv. Determine the rise velocity at time t = 5 seconds, and the maximum speed of the helicopter.

Additional information:

Right after the payment you receive a link to the archive with the solution of the problem in theoretical mechanics D1 B03 (condition 03) in the test book "theoretical mechanics" Dievskaya VA Malyshev IA 2009 for university students.
The decision is decorated in a format word (typed or hand-written decision in a Word), packed to the archive zip (open on any PC).

After checking the solutions I would be very grateful if you leave your positive feedback.