Chapter 7, Problem 35P

1. Determine the distance xcto the center of gravity of the homogeneous rod bent into theparabolic shape. If the rod has a weight per unit length y determine the reactions at the fixedsupport 0. Given: N y = 10 m a = 0.5 m b = 0.25 m

Determine the magnitude Pof the vertical force required to lift the wheelbarrow free of the ground at point B. The combined weight of the wheelbarrow and its load is 231 lb with center of gravity at G. 26" 23" 18" 21" 7" Answer: P = i Ib

Determine the resultant force and specify where it 2. acts on the beam measured from A. Also determine the reactions at A & B. 150 lb/ft B - 6 ft -8 ft

the man is holding up the 35-kg ladder ABC by pushing perpendicular to ladder. The total length of the ladder is AC=6m. If maximum force that the man can exert is 400N at B which is 2m from A. determine the smallest angle, theta, at which the man can support the ladder

6. The crane at equilibrium supports a weight of W=1 kN acting at G. The 8m- long horizontal boom DG has weight of W₁-2.5 kN and center of gravity at G₁ (the center of the boom). The crane (excluding the boom) has a weight of W2-5 kN and center of gravity at G2. The cable KH is horizontal. The two wheels of the crane contact the smooth 30° surface at A and B. (1) To determine the tension force in cable KH and the reactions at A and B, please choose a proper FB and draw the FBD. (2) Determine the tension force in cable KH and the reactions at A and B. 1m 1m G 30° W W₁2m 2m 1m Bi 3m im 30%

Determine the magnitude Pof the vertical force required to lift the wheelbarrow free of the ground at point B. The combined weight of the wheelbarrow and its load is 251 Ib with center of gravity at G. 27" 23" B 16" 21" 6" Answer: P = i Ib

The pumping unit is used to recover oil. When the walking beam ABC is horizontal, the force acting on wireline at the well head is 250 lb. Determine the torque M which must be exerted by the motor in order to overcome this load. The horse head C weighs 60 lb. and have center of gravity at Gc. The walking beam ABC has weight of 130 lb. and center of gravity at Gb , and the counterweight has weight of 200 lb. and center of gravity at Gw. The pitman , AD , is pin connected at the ends and has negligible weight.

Solve the components of reaction at its support given the compound shown below. Neglect its weight and thickness. Show FBD and complete solution

Determine the support reaction components of the roller at B and fixed support at D for the composite beam loaded as shown