two forces of magnitude 10 N each act on an object simultaneously .The resultant force acting on the object cannot be (1) 12N. (2) 10N (3) 15N (4)21 N [please give reason also]
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Answered by
10
21 newton can not be ....
In this type of question add both and then subtract both...
By adding we get 20
And by subtracting we get 0
So resultant can be between these two values ...
21 is outside of this then this is the ans ....
Hope it helps you
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Answered by
3
using cosine law we can see that the minimum of this forces will be 0N ie when angle between two forces is 180 or they r antiparallel and the maximum of these forces will be 20N i.e when the forces are parallel or the angle is 0 degree.....thus 21 N is the odd one out....
hope this helps u.....
cos(180)=-1
cos(0)=1
hope this helps u.....
cos(180)=-1
cos(0)=1
look again at the answer....due to shotage of time I was not able to answer it fully......
ok no problem
it happens sometimes
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