Question

5. For each group of three forces below, determine whether the forces in each pair are pulling at right angles to each other.

• 13 lb, 35 lb, resultant force 30 lb, no; 20 lb, 15 lb, resultant force 25 Ib, no
13 Ib, 35 lb, resultant force 30 lb, yes; 20 lb, 15 lb, resultant force 25 lb, yes
13 lb, 35 lb, resultant force 30 lb, yes; 20 lb, 15 lb, resultant force 25 lb, no
• 13 lb. 35 lb, resultant force 30 lb, no; 20 b, 5 lb, resultant force 25 lb, yes

Answer 1

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13 Ib, 35 Ib ,resultant force 30 Ib,no;20