MCA Second Engineer Applied Mechanics Practice Questions - MCA Second Engineer - Applied Mechanics (SQA Written Academic Examination) Exam

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Three concurrent coplanar forces are in equilibrium. Two of them are 40 N due east and 30 N due north. What must the third force (the equilibrant) be?

70 N west 50 N at arctan(3/4) north of east 10 N south 50 N at arctan(3/4) south of west

Correct Answer:

50 N at arctan(3/4) south of west

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