The direction of the gun barrel is rigidly fixed on

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The direction of the gun barrel is rigidly fixed on the railway platform, it makes an angle of 30 degrees with the horizon. The projection on the barrel direction rejected on the ground plane the same angle on the direction of the rails. Determine how far retrace platform when firing a projectile m1 = 60 kg, taking off at a speed v1 = 480 m / s. Platform Weight with instrument m2 = 18 m, the coefficient of friction of 0.03.

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Task 10971. Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
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