A trough of concrete weighs 3.5 kN (Figure P4.17). (a) Draw a free body diagram of the cable's ring A. (b) Treating the ring as a particle, determine the tension in cables AB and AC. 30° B

why does the force exerted from AB to the hydraulic cylinder decrease "exponentially" as the angle alpha increases?

A man holds a 187-N ball in his hand, with the forearm horizontal (see the figure). He can support the ball in this position because of the flexor muscle force M, which is applied perpendicular to the forearm. The forearm weighs 18.5 N and has a center of gravity as indicated. Find (a) the magnitude of M and the (b) magnitude and (c) direction (as a positive angle counterclockwise from horizontal) of the force applied by the upper arm bone to the forearm at the elbow joint. Upper arm bone Elbow joint 0.0510 m+ Flexor muscle -0.0890 m -0.330 m-

PROBLEM 1: Determine the tension in each cable and the components offorce reaction at D needed to support the load. Required: 1. Find dx, dy, and dz 2. find tension ab and tension ac