30 kg 50 kg Hg = 0.30- P 40 kg Hg = 0.40- 30 Maximum Value of P in Hg = 0.45 Newtons The three flat blocks are positioned on the 30° incline as shown, and a force P parallel to the incline is applied to the middle block. The upper block is pre- vented from moving by a wire which attaches it to the fixed support. The coeffi- cient of static friction for each of the three pairs of mating surfaces is shown. Determine the maximum value which P may have before any slipping takes place.

30 kg 50 kg Hg = 0.30- P 40 kg Hg = 0.40- 30 Maximum Value of P in Hg = 0.45 Newtons The three flat blocks are positioned on the 30° incline as shown, and a force P parallel to the incline is applied to the middle block. The upper block is pre- vented from moving by a wire which attaches it to the fixed support. The coeffi- cient of static friction for each of the three pairs of mating surfaces is shown. Determine the maximum value which P may have before any slipping takes place.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.72P

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