The cantilevered W530x 150 beam shown is subjected to a 8.3-kN force F applied by means of a welded plate at A. Determine the equivalent force-couple system at the centroid of the beam cross-section at the cantilever O. 0.64 m -4.1 m- Answers: F = ( 3.4 i+ -7.5 j) kN Mo = i 29.66 k kN-m 4.

Ruby, with mass 55.0 kg, is trying to reach a box on a high shelf by standing on her tiptoes. In this position, half her weight is supported by the normal force exerted by the floor on the toes of each foot as shown in Figure P14.75A. This situation can be modeled mechanically by representing the force on Rubys Achilles tendon with FA and the force on her tibia as FT as shown in Figure P14.75B. What is the value of the angle and the magnitudes of the forces FA and FT? FIGURE P14.75

The cantilevered W530x 150 beam shown is subjected to a 8.3-kN force Fapplied by means of a welded plate at A. Determine the equivalent force-couple system at the centroid of the beam cross-section at the cantilever O. 0.64 m A -4.1 m- 24°

The foot of a ladder rests against a wall and its top is held by a tie rope, as shown. The ladder weighs 100 N, and its center of gravity is 0.4 of its length from the foot. A 150 N child hangs from a rung that is 0.2 of the length from the top. Determine the tension in the tie rope. Tie rope 150 N won meod e jo 551ot adn 37° 100 N 0.4L