Find the vertical components of a force of 20N, making an angle of 90°.
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Answer:
R^2 = P^2 + Q^2 + 2 PQ cos30
= 10^2 + 20^2 + 2. 10. 20 .(1/2)sqrt(3)
= 100 + 400 + 200 sqrt(3)
= 500 + 200 sqrt(3) . Taking sqrt. etc. we get R = 29.1 N (approx.)
Explanation:
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