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This question can be solved using parallelogram rule.Number 1 part (b)
i don't understand how to draw this current vector diagram and unable to resolve. pls help
a vector diagram will be appreciated.
Thanks
https://www.xtremepapers.com/community/attachments/capture1-png.10278/
To find the resultant magnitude, there are two ways:
- you have a rule don't you? Use it to measure the relative length of the forces. Force magnitude ratio equals diagram length ratio. Use the ratio to calculate. This is the "unprofessional" way but it works.
- use purely mathematics to calculate the force. Resolve the two forces and you get for the 6N, x-component is 6 cos40, y-component 6 sin40. The 8N, x-component 8, y-component 0. So the resultant x-component = 8 + 6 cos40, y-component 6 sin40.
Resultant magnitude, using Pythagorean Theorem, is sqrt [(8 + 6 cos40)^2 + (6 sin40)^2].
Answer should be 13.2N