Engineering Mechanics

A load of 100 lb is hung from the middle of a rope,

which is stretched between two rigid walls 30 ft apart.

Due to the load, the rope sags 4 ft in the middle.

Determine the tension in the rope.

• 165 lbs

• 194 lbs

• 173 lbs

• 149 lbs

• 198 lb, 30°

• 258 lb, 36.5°

• 185 lb, 42°

• 232 lb, 17.5°

Find the resultant of the concurrent coplanar forces

80 lbs. at - 30° and 60 lbs. at 60°.

• 100 lbs. at 6.87°

• 100 lbs. at- 66.9°

• 120 lbs. at 113.1°

• 120 lbs. at 6.87°

• 190 lbs

• 125 lbs

• 212 lbs

• 75 lbs

• RA=810N & RB=790N

• RA= 700 N & RB= 800 N

• RA= 810 N & RB= 780 N

• RA= 800 N & RB= 780 N

• External Force

• Internal Force

• Concentrated Force

• Natural Force

• 750 N

• 770 N

• 760 N

• 780 N

• 200 N

• 250 N

• 150 N

• 300 N

• 44 N

• 55 N

• 51 N

• 47 N

Find the location of the centroid of the composite area consisting of a 10 in square surmounted by semi-circle. The centroid of a semicircle is located 4r/3pi above the base (diameter) of a semi-circle of radius r.

• 6 in from bottom

• 6.4 in from bottom

• 6.2 in from bottom

• 7 in from bottom