Question

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Problem 4 (20 points) A right-angled steel bracket is fixed to a vertical wall as shown. A force of 1000 N acts on the free end of the bracket at an angle of 30° from the horizontal Determine the moment of the force about the point B. COON - 200 mm

Answer 1

Magnitude of moment of force M = RFsing$\Theta$

R = sqrt[(160mm)² + (200mm)²] = 256.13 mm = 0.256 m

Force of magnitude F =1000 N

the angle between the line of action of the force and R direction

Magnitude of moment of force M = RFsing$\Theta$ = 0.256*1000*sin(60+51.4) = 238.4 N-m clock wise