A shaft of mass 5•097 t is lifted by two chains from a crane hook. The length of each chain is 4 m and their connections to the shaft are 4 m apart. If the centre of gravity of the shaft is 1•25 m from one of the connections, find the tension in each chain.

A face of a dam adjacent to the water has the shape of an isosceles trapezoid of altitude 20 m, upper base 50 m, and the lower base 40 m. Find the total force exerted by the water on the dam when the water is 15 m deep.

A person is sitting with one leg outstretched and stationary, so that it makes an angle of 30.0° with the horizontal, as the drawing indicates. The weight of the leg below the knee is 34.5 N, with the center of gravity located below the knee joint. The leg is being held in this position because of the force M→ applied by the quadriceps muscle, which is attached 0.100 m below the knee joint (see the drawing). Obtain the magnitude of M→.

The face of a dam adjacent to the water has the shape of an isosceles trapezoid of altitude 20 m, upper base 50 m, and lower base 40 m. Find the total force exerted by the water on the dam when the water is 15 m deep.

A man on the wire singing "Man on a Wire" while practicing for his circus show has reached the center of the rope, creating a dip on the center angled at 63.2 degrees. If the mass of the man is 49.55 kg and the tension force that can be handled by the wire is 449.77N, would the wire break? Show the tension caused by the man hanging on the wire.

1 The height of tower is 50m

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a cylinder that is 500 mm in diameter and 2.0 m long has a specific weight of 535 N/m3 . It is held down into position with a cable attached to the sea floor. At this location, the sea is 500 m deep and the cylinder is to held in a fully submerged position just 3 m above the sea floor. FInd the resulting tension in the cable.

The figure shows the Russel fracture traction device and a mechanical model of the leg. The leg is held in balance in the position indicated by the two weights attached to the two cables. The combined weight of the leg and cast is W=180 N. The horizontal distance between points A and B where the cables are attached to the leg is L=100 cm and the vertical distance is d=5 cm. Point C is the center of gravity of the cast and leg at three quarters of the L measured from point A (3L/4= 75 cm). The angle that cable 2 makes with the horizontal is measured as β=30°. Accordingly, in order for the leg to remain in balance in the shown position; a) Find the tensile force T1 in cable 1. (Write your result in N) Answerb) Find the tensile force T2 in cable 2. (Write your result in N) Answerc) Find the angle α of cable 1 with the horizontal. Response

200 lb 390 lb 5. The block in the figure has a weight of 400 lb and an applied force of 600 lb to the right. There is also a pressure P exerted by the incline plane. If the direction of the resultant, R, is parallel to the incline, determine the magnitudes P and R. W = 400 lb # F 600 lb