Question

three forces are applied to a plate

3 4-4* Se aplican tres fuerzas a una placa en la forma que se in- dica en la figura P44. Determinar a. El momento de la fuerza Fy respecto al punto B. b. El momento de la fuerza Fy respecto al punto A c. El momento de la fuerza y respecto al punto B. F = 250N 100 mm BA 100 mm IN 200

Answer 1

Moment =( force) × ( Perpendicular distance between point about which we are measuring moment ,and line of action of force)

a )The moment of force F1(=250 N)with respect to

Point B is

= F1 N × (100+200) mm = 250 N × 0.3 m = 75 N - m

b.) The moment of force F3 (200 N) with respect to point A is

= F3 N ×( 100+100) mm = 200 N × 0.2 m

= 40. N - m

C.)The momentof force F2(= 100 N) with respect to point B is  

= F2 N × [ 200 /(2^0.5) ] = 100 N × 0.1414 m

= 14 .14 N - m

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