Question

Forces of equal magnitudes P acts on a point. If the
angle
between the two forces is e, what is the magnitude of the
resultant.
​

Answer 1

As we know resultant of two forces acting at an angle theta is given by expression P(resultant)=(p2+q2+2pqcos(theta))^1/2 as per parallelogram law of forces. now put p=q=p and solve for P(resultant), you will get p[(2(1+cos(theta))^1/2]=p[(2(2cos^2(theta/2))^1/2] which equals [2pcos(theta)/2]

pls mark brainiest

Answer 2

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For 17N, both the vectors, should be parallel, i.e., angle between thyem should be zero.

For 7N, both the vectors should be antiparallel, i.e., angle between them should be 180

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For 13N, both the vectors should be perpendicular to each other, i.e., angle between them should be 90

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