The uniform 60 kg slender rod is at rest in the position shown when P = 500 N is applied. Determine the radius of gyration (kG) of the rod if L1 = 4.5 m and L2 = 5.5 m. %3D A L2 P L1 B

Ay=0 Az= 7.1

6-76 The triangular plate of uniform thickness shown in Fig. the two cables supporting the plate and the reaction at the ball support. has a mass of 400 kg. Determine the tensions in 900 mm B 1500 mm y

The horizontal steel shaft has a mass of 360 kg and is suspended by a vertical cable from A and by a second cable BC which lies in a vertical transverse plane and loops underneath the shaft. Calculate the tensions T1 and T, in the cables. 1.0 m 1.0 m B. T2 Т T1 2.0 m -1.9 m 2.6 m 0.6 m Answers: N T1 = i N T2 = i

6

A smart phone is sitting in a docking station. The docking station has a mass of 510 g and the phone, 85 g. Determine the reaction forces at the two supports. 65 mm 70 mm 60° 150 mm (Express your answers using two significant figures.) FA = N FR = N

Pravinbhai

The pumping unit is used to recover oil. When the walking beam ABC is horizontal, the forceacting in the wireline at the well head is 250 lb. Determine the torque M which must beexerted by the motor in order to overcome this load. The horse-head C weighs 60 lb andhas a center of gravity at Gc. The walking beam ABC has a weight of 130 lb and a centerof gravity at GB, and the counterweight has a weight of 200 lb and a center of gravity atGW. The pitman, AD, is pin connected at its ends and has negligible weight.

The 50-lb mulching machine has a center of gravity at G. Determine the vertical reactions at the wheels C and B and the smooth contact point A. X 4 ft 1.52 4 ft 1.25 ft 1.25 ft 1.52 1.25 ft 1.25 ft y

18 B 77 L-2 -L- A -x- Persons A and B are standing on a board of uniform linear density that is balanced on two supports, as shown in the figure. What is the maximum distance x from the right end of the board at which person A can stand without tipping the board? Treat persons A and B as point masses. The mass of person B is 1.75 times that of person A, and the mass of the board is 0.359 times that of person A. Give your answer in terms of L, the length of the board.