Question

The weightless bar is used to support the 50 kg block in its vertical frictioless guides. if the coefficient of static friction is 0.30 at the upper end of the bar and 0.40 at the lower end of the bar, determine:

1. The friction force at each end for x= 75 mm

2. The Maximum value of x for which the bar will not slip.

explain in detail

The weightless bar is used to support the Su-kg block in its vertical frictionless If the coefficient of static friction is 0.30 at the upper end of the bar and 0.40 at the lower end of the bar, determine: 1. The friction force at each end for x= 75 mm. 2. The maximum value ofx for which the bar will not slip. You must explain your results as you solve for both cases above. 50 kg 300 mm mage

Answer 1

soky unoor 290.474 mm : y 290.474 mm N, 50x9.81 AT 75mm -- N X. free bedly diagram 1300²_757 - 290.473751 svão N, 2N, N2 = 490.5N Note Limiting frictional resistine force fi = H, N, = 0.3x490.5=147015N f = Ho N₂ = 0.48 49005 = 196.2 N At State equilibrium, SMATO fix 290.474 = 0,X75 fra ts x49005 290.474 The 126.646 0) < fra 14T15N At statie equilibrium SH=0 196.2N fa= f ( t = 126 6hb NK fe 196.2N

2) At the maximum not slip condition . fi = thyrs N => fa=fi i 1471150 At stata equilibrium Smaco fixy a Nixx 14745 xy = 490.5 a 49005 THIS tano e la 490.5 а и 9- си1» ( 0-73.3. it as Khan then the bar will shop x 300 coso 22 300 XCOJ 73'3 Txman = 86.208 mm man