Two identical wooden boards lean (standing still) against a frictionless wall. Board #1 makes an angle of 01 with the floor. Board #2 makes an angle of 02 with the floor, where 02 > 01. Check all the following quantities which are larger for Board #1 than for Board #2. There may be more than one correct answer! weight of board normal force between board and floor normal force between board and wall friction force between board and floor
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- The leg and cast weigh 220 N (w1). Determine the weight w2 and the angle alpha needed so that no force is exerted on the hip joint by the leg plus the cast.In the figure below, the horizontal boom is uniform and has the same weight as the hanging weight at its end. The boom is supported by the cable with a tension T. The angle between the boom and the cable is 30°. What is the magnitude of horizontal force Fx exerted by the wall on the boom? Fy Fx W16. ao The drawing shows a rectangular piece of wood. The forces applied to corners B and D have the same magnitude of 12 N and are directed parallel to the long and short sides of the rectangle. The long side of the rectangle is twice as long as the short side. An axis of ro- tation is shown perpendicular to the plane of the rectangle at its center. A third force (not shown in the drawing) is applied to cor- ner A, directed along the short side of the rectangle (either toward B or away from B), such that the piece of wood is at equilib- rium. Find the magnitude and direction of the force applied to corner A. A D Axis Problem 16
- A 882 N sign is hung symmetrically by 3 cables that each make an angle of 69° to the horizontal. How much is the vertical component of the tension force in each cable? Answer: 294 N Check Correct Marks for this submission: 1.00/1.00. tension force in each cable? Answer: 91.5N Check xSAQ 1 1.2 m D C An 80-kn'm couple shown in the plate is caused by a pair of parallel forces of magnitude F (not shown). Determine: 80 kN m a) the smallest possible value of F, and 1.6 m b) the value of F if the forces act at points A and C and are parallel to the dashed line shown at A. A В 60°SAQ 1 1.2 m D C 80 kN m An 80-kn.m couple shown in the plate is caused by a pair of parallel forces of magnitude F (not shown). 1.6 m Determine: a) the smallest possible value of F, and b) the value of F if the forces act at points A and C and are parallel to the dashed line shown at A. A В 60°
- (a) Find the tension in each cable supporting the 588-N cat burglar. (Assume the angle θ of the inclined cable is 30.0°.) inclined cable N horizontal cable N vertical cable N (b) Suppose the horizontal cable were reattached higher up on the wall. Would the tension in the inclined cable increase, decrease, or stay the same?Figure Fw 40° CG mg FT ▼ Calculate the tension Fr in the wire that supports the 42 kg beam shown in the figure(Figure 1). Express your answer using two significant figures. FT = 320 N ✓ Correct Part B Previous Answers A Calculate the magnitude of the force Fw exerted by the wall on the beam. Express your answer using two significant figures. Fw = 320 N Part C Previous Answers ✓ Correct ✔A large wrecking ball is held in place by two light steel cables. If the mass m of the wrecking ball is 3620 kg, what are (a) the tension TB in the cable that makes an angle of 40 with the vertical and (b) the tension TA in the horizontal cable?
- This problem concerns the concept of tension in a rope. Consider a rope subjected to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An arbitrary point P divides the rope into a left-hand segment L and a right-hand segment R. Figure wi L pull R 232 pull 1 of 3 Part A For segment R and segment L to hold together, they must exert forces on each other. What is the direction of the force exerted on segment R by segment L? View Available Hint(s) left right Submit Part B FLR Assume that segment R exerts a force of magnitude T' on segment L. What is the magnitude FLR of the force exerted on segment R by segment L? Give your answer in terms of T and other constants such as g. ► View Available Hint(s) = Submit % ΑΣΦ www ?A block of weight w is suspended from a rope tied to two other ropes at point O. One rope ishorizontally attached to a wall and the other is fastened to the ceiling. The angle betweenceiling and the rope is 60°. What are the tensions in each of the ropes? Assume the weights ofthe ropes and the knots are negligible. If the weight of the block is 100 N, what is the tension inthe ceiling rope?A 200 N sign hangs from the middle of a cable between two buildings. The ends of each cable are attached to each building at the same height. The cable cannot exceed 1500 N without breaking. Find the minimum angle that the cable can make from the horizontal.