The symmetric brake shown in the figure has a width of
30 mm with a mean friction coefficient of 0.25.
Note that
L 150 mm 1
= , L 200 mm 2
= , L 200 mm 3
=
and radius of the drum is 150 mm. For an estimated
actuating force of F=500 N for each brake, determine:
a) The maximum pressure on each shoe
b) The total brake
torque capacity
c) Comment on the self – energizing behavior...
Take: P-500 N, L-8m,w-2m,h-200 mm, b-60 mm, and d-20 mm At Point A,find: ?x, ?z' and Tr (Enter values in MPa Support cross-section MPa
Problem 2 180 mm 120 mm 0 ΑΙ B D С E F F = 277 N h = 155 mm Knowing that the pulley has a radius of 45 mm, Determine the components of the reactions at B and E in N. (The answers may be positive or negative in reference to the given coordinate system) Bx= Answer: By= 1.00 Answer: tion Ex= Answer: Ey= Answer:
40 mm 120 mm 80 mm 200 mm Problem 6 The 240 mm diameter pulley and the 200 mm lever AB are welded to axle BE which is supported by bearings C and D. If a 720 N vertical load is applied at A when the lever is horizontal, determine: a) The tension T in the cord b) The reactions at C and D. Assume that the bearing at D does not exert axial thrust and that both bearings do...
PROBLEM 3.55 950 mm Two solid steel shafts (G 77.2 GPa) are connected to a coupling disk B and to fixed supports at A and C. For the loading shown, determine (a) the reaction at each support, (b) the maximum shearing stress in shaft AB. (c) the maximum shearing stress in shaft BC. 200 mm 38 mm L4 IN-m 50 mm
please show all work clearly
Problem 4 L L C 1 'm B D d A E F L = 3.8 m d = 2.3 m F = 806 N pulley radius = 0.3 m Determine the components of the support reactions at A and at E.
Problem 3 Three steel rods (with E-200 GPa, Cla = 1 1.7x10-6/oC) support a 45 kN load P. Each of the rods AB and CD has a 200 mm cross-sectional area, and rod EF has a 575 mm2 cross sectional area. The horizontal bar BED may be treated as rigid. The distance BE along the horizontal bar from pin B to pin E is 450 mm, and the distance ED along the horizontal bar from pin E to pin D...
L L - с 1 m B D O A E F -3.7 m d=2.7 m F = 621 N pulley radius = 0.4 m Determine the components of the support reactions at A and at E. Answer
Problem 1 (10 points) A truss is pin supported at A and roller supported at G The support reactions at A and G are 15 ft A, ; 4500 lb A-0 lb G, 1500 lb 3000 lb 3000Ib Determine the forces in members BC, CD and C. State whether they are in compression or tension.
Problem 1 (10 points) A truss is pin supported at A and roller supported at G The support reactions at A and G are 15...
Find the Inverse Transform L {F(s)} of F(s) 38+2 $2 -38 +2 o L 1{F(s)} = 8e2t - 5et OL-'{F(s)} 5 8-1 $ 2 L'{F(s)} = -5e2-8et None of them