The coefficients of static and kinetic friction between the 89-kg block and the inclined plane are 0.34 and 0.27 respectively. Determine (a) the friction force F acting on the block when P is applied with a magnitude of 137 N to the block at rest, (b) the force P required to initiate motion up the incline from rest, and (c) the friction force F acting on the block if P = 612 N. The friction force Fis positive if it acts up the incline and negative if it acts down the incline.

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Chapter1: Units, Trigonometry. And Vectors
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The coefficients of static and kinetic friction
between the 89-kg block and the inclined
plane are 0.34 and 0.27 respectively.
Determine (a) the friction force Facting on the
block when P is applied with a magnitude
of 137 N to the block at rest, (b) the force P
required to initiate motion up the incline from
rest, and (c) the friction force F acting on the
block if P = 612 N. The friction force Fis
positive if it acts up the incline and negative if
it acts down the incline.
Answers:
89 kg
16°
21°
P
Hg = 0.34
Hk = 0.27
Transcribed Image Text:The coefficients of static and kinetic friction between the 89-kg block and the inclined plane are 0.34 and 0.27 respectively. Determine (a) the friction force Facting on the block when P is applied with a magnitude of 137 N to the block at rest, (b) the force P required to initiate motion up the incline from rest, and (c) the friction force F acting on the block if P = 612 N. The friction force Fis positive if it acts up the incline and negative if it acts down the incline. Answers: 89 kg 16° 21° P Hg = 0.34 Hk = 0.27
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