A light triangular plate OAB is in a horizontal plane. Three forces, F1= 2 , F2=

Question

A light triangular plate OAB is in a horizontal plane. Three forces, F1= 2 , F2= 2 , and F3= 8 act on the plate, which is pivoted about a vertical axis through point O. In the figure, the torque of force {{F}}_{{1}} about the axis through point O is closest to: 1.0 m N cdot m 0.60 m N cdot m 0.90 m N cdot m 0.74 m N cdot m 1.2 m N cdot m

1.0
0.60
0.90
0.74
1.2 A light triangular plate OAB is in a horizontal plane. Three forces, F1= 2 , F2= 2 , and F3= 8 act on the plate, which is pivoted about a vertical axis through point O. In the figure, the torque of force {{F}}_{{1}} about the axis through point O is closest to: 1.0 rm N cdot m 0.60 rm N cdot m 0.90 rm N cdot m 0.74 rm N cdot m 1.2 rm N cdot m

Explanation / Answer

rXF=rFsin@ @=90-30=60(included angle) rXF=1.039Nm closest to 1Nm

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