Question

3. If the greatest possible resultant of two forces P and Q is n times the least, show
that the angle between them when their resultant is half their sum is
Proi
n.
n² + 2
2 (n² - 1)
COS​

Answer 1

Answer:

ANSWER

R=P=[P2+Q2+2PQcosθ]1/2

Q2+2PQcosθ=0

Q+2Pcosθ=0......{1}

let the angle between resultant of 2P and Q be α

tanα=Q+2Pcosθ2Psinθ

from equation 1

tanα=∞→α=90

Answer 2

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