Question

At what angle should the two forces 2p and
√2 p act do that the resultant force is p√10


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Answer 1

R is equal to (2 * p) ^ 2 + √ (√2 * p) ^ 2 + 2 (√2 * p) * (2 * p) cosine theta

or, P √ 10 is equal to * √ 2 * p ^ 2 * cosine theta + √ 6 * p ^ 2

or, 4 * p ^ 2 is equal to 4 √ 2 * p ^ 2 * cosine theta

or, Cosine theta is equal to 1/√2

Therefore, theta is equal to 45 degrees So, the angle between the forces will be 45 degrees.