Question

A body is under action of 2 forces ,7N and 10N . Find the resultant of the 2 forces, if (a)the forces are parallel and act in the same direction (b) the forces are parallel and act in the opposite direction (c) the forces are inclined at an angle of 60degree to each other (d) the forces are inclined at an angle of 160degree (e) the two forces act at 90degree to each other

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Answer 10

R^2 =7^2 + 10^2=49 +100=149 R=square root of 149 =12.21