Question

Leaning stick med: Nov 20 at 3:16pm iz Instructions your answer in Sl units and to three significant figures. Question 1 5 pts A stick which is 1.38 meters long is leaned against a wall at an angle. If the coefficient of static friction between the stick and the wall and floor is 0.793, determine the furthest distance from the wall that the bottom of the stick may be placed without slipping.

Answer 1

Length L = 1.38m M = 0.793 Let farthest distance is D, till the stick is in equilibrium coso force - EF = Fuw - FC =0 T D => Fuw = FFG -- 0 EFy = Fra - Mg + F(W = 0 -- moment about a EMA = Fuw Lsino + Ffw ECOSO - My Ļ.cosezo sino = mg - 2 Ffw IN nonnal Fow f friction force - tano = Mg - 2 Ffw layground - 2 LW well Fow also Ffw = u Fow 4 FG = MENG - from @ 44 Ffw = ju F f = 4² FNG --- from ③ 40 Fua-Mg + u² FNG =0 FNG = mg / 6+ 42) --- ④

from 0,86 @ Ffw = my lehetFuw = my ) tuz) from ③ 4 tono = (ma - 2 momento em que fono - lode = 1-0.393% = 0.234 zu 2x0.793 tano = 0.234 122.02 – 0.234 √2²_D² = 0.234D 2²-D² = 0.054756 D² 1-38m)2 = 1.054756 D2 D = 1.344 m