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CBSE Class 11-science Answered

two forces whose magnitude are in the 3:5 give a resultant f Jatio 3:5 give 20 N. If fac 20. It fue angle of thread indination of each face find Magnitude
question image
Asked by vinitdubey7735 | 14 Mar, 2024, 11:21: AM
answered-by-expert Expert Answer

Let the two forces be A and B respectively. 

img .....(Given) 

Let A = 3x and B = 5x  

Using cosine law, we get, 

img 

img 

img  ...(The resultant force is 20 N) 

img

20 = 7x 

Thus, 

x =20/7 = 2.85 

Thus, 

A = 3x = 3 x 2.85 = 8.55 N 

B = 5x = 5 x 2.85 = 14.25 N 

 

Answered by Shiwani Sawant | 14 Mar, 2024, 12:17: PM
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