You are asked to design the decorative mobile shown in Figure P11.56 (See picture). The strings and rods have negligible weight, and the rods are to hang horizontally. a. Draw the free-body diagram for each rod. b. Find the weights A, B, C and the tension in the strings S1, S2 and S3

In the figure, the weight w is 56.4 N.  a. What is the tension in the diagonal string? b. Find the magnitudes of the horizontal forces F1 and F2 that must be applied to hold the system in the position shown.

a. A 1200-N uniform boom of length 2.00 m is supported by a cable, as shown in the figure.  The boom is pivoted at the bottom, and a 2000-N weight hands from its top.  Find the tension in the cable and the components of the reaction force exerted on the boom by the floor. For the next two parts you can assume that the 2000-N weight is concentrated at the top end of the boom. b. Determine the total moment of inertia of the boom/weight system around the pivot point. c.  The cable now breaks, and the boom pivots until the right end hits the floor.  Determine the velocity of the right end at the instant before it hits the floor.

C and D

A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mp = 6.2 kg and the sign has a mass of mg = 17.3 kg. The length of the beam is L = 2.55 m. The sign is attached at the very end of the beam, but the horizontal wire holding up the beam is attached 2/3 of the way to the end of the beam. The angle the wire makes with the beam is 0 = 34.2°.

Hand written and clean answer

1. A 160kg utility pole extends 12.0m above the ground. A horizontal force of 250N acts at its top and the pole is held in the vertical position by a cable. a. Draw a free-body (or force) diagram for the pole. b. Determine the tension in the cable. c. What are the reaction forces exerted at the lower end of the pole by the ground?   2. A 40.0kg uniform platform is suspended by two cables, 2.00m apart, where the centre of the platform lies midway between the cables. A 5.00kg paint bucket is placed on the platform, 24.0cm to the right of the right cable. Determine the tension in each cable.

Closure: A dog walker is trying to control three different dogs. One is pulling N72W with a force of 24 Ibs. A second is pulling S13E with a force of 40 Ibs. The third is pulling S71W with a force of 34 Ibs. VWhat is the magnitude, direction angle and bearing of the force that the dog walker must apply so that she is in equilibrium?