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ABCD is a square; forces of 1 kg wt, 6 kg wt and 9 kg wt act in the directions AB, AC and AD respectively; find the magnitude of their resultant correct to the two decimal points.

prathmesh kishor kodrikar , 7 Years ago

Grade 11

1 Answers

Shailendra Kumar Sharma

Last Activity: 7 Years ago

Assume A be origin, AB be X axis i.e i be the unit vector and AD be y axis i.e j be the unit vector
so AC will be $i+j/sqrt{2}$

SO net force will be {1 i +6 ( $(i+j)/\sqrt{2}$ )+ 9j }Xg
{ $(1+6/\sqrt{2})i +(1+9/\sqrt{2})j$ }X 9.8

So magnitude 51.38 N

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