How can you differentiate between a contact force and
Find the net forces from the following diagrams.
8N
10N
12N.
(b)8N
8N.
(c)8N
6N
(d)9N
8N.
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Answer:
The possibilities are:
If they are on the same direction, they would add to get the required net force. i.e, (8+12+10)N=30 N.
If one or two of them are in opposite with respect to other(s), then there will be minus (subtraction) in the calculation of the required net force. For example, if 8 N is in opposite direction with respect to others, then, calculation would be,(10+12–8)N=14 N.
If they are mutually perpendicular with each other, the net force would be 82+122+102−−−−−−−−−−−−√
If each of them are in three possible directions and if the measured angle between any of the pair of three forces is other than 0∘ , 90∘ , 180∘ , 270∘ , 360∘ , then,
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