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- A spool of mass m = 2 kg rests on an incline as shown in the figure. The inner radius of the spool is r = 200 mm and the outer radius is R = 500 mm. The coefficient of friction between the spool and the incline is u = 0.4, and the angle of incline 0 = 1. Which way does the force of friction act, up or down the incline? 60°. R 2. What is the required horizontal pull T to balance the spool on the incline? T 3. Is the spool about to slip?A uniform plank with length 2 m, mass 30k is supported by three ropes as shown by the blue vectors in the above figure. If the person's weight is 700 N, d = 0.5 m from the left find tension T1 From the above question Find T2. From the above question, find T3.I need help with this practice problem. The answer key doesn't provide the free body diagram but it says b.) 0.9m from the other end, but I don't understand how to solve it. Two people (a child and parent) are sitting on a teeter-totter of length L = 3 m andmass m = 10 kg. There is a single support in the middle. The adult weighs m1 = 75 kg and thechild weighs m2 = 30 kg. (a) Draw a free body diagram. (b) If the child sits on the end of the teeter-totter, where must the adult sit to balance it?
- Determine the tension in each cable to support the 100-kg crate in the equilibrium position shown. Recall: W = mg, g = 9.81 m/s2² B m 2.5 m 2m 2 m mI have a shelf full of textbookd.Each book has a mass of 1.0 kg and mus=0.3. a. How hard do I need to push horizontally to unstick the top book from the rest of the pile? b. How many books can I unstick from the top of the pile if I push with a force of 16N?The figure below shows a bird feeder that weighs 190.5 N. The feeder is supported by a vertical cable, which is in turn tied to two cables, each of which is attached to a horizontal post. The left cable makes a 60° angle with the post, while the right cable makes a 30° angle. What is the tension in each cable (in N)? 60° 30° Bird food 190.5 It appears you used 30.0° for both angles. Note the left cable makes a 60.0° angle with the post, while the right cable makes a 30.0° angle. N left cable 85.35 right cable Consider first the system of just the feeder. What forces act on it? What is the tension in the bottom cable? Next consider the point where the three cables meet. What are the force components in the x-direction? The y-direction? Can you use Newton's second law in each direction to find the tensions? N 147.8 Consider first the system of just the feeder. What forces act on it? From Newton's second law, what is the tension in the bottom cable?N bottom cable
- Determine the magnitude of the components of the force and the lever arm d that would put the structure below in equilibrium. F1 = 20 N, F2 = 10 N F3 = 5 N, a = 2.0 m, b = 3.0 m, c = 1.0 m.The pulley system below is in static equilibrium, where load W3 is 730 N, angle a = 500 and angle 0 = 300. Determine the value of loads W1 and W2, then calculate the ratio of (W1/W2). Give your answer as a ratio of (W1/W2) to two decimal places. %3D T3 T5 T6 T4 T1 T2 W3 W2 W17. Figure A shows a weight-and-rope system held in equilibrium be means of two fixed and frictionless pulleys. If W1 id 50 N, find the values of W2 and W3. In the equilibrium configuration in the figure A, using frictionless pulleys, find the maximum value of W2 if the can sustain a tension of 200 N before breaking. Figure A.
- Two blocks of mass m 15 kg and mp 10 kg are connected by a massless string that passes over a pulley as shown in the figure below. The system is in static equilibrium. There is friction between Block A and the surface (u-0.7) but neglect the friction between the string and the pulley. What is the static friction force on Block A? Pulley A. String B. 98.0 N 49.0 N O 147 N )103.0 N OONThe y-component of the force F which a person exerts on the handle of the box wrench is known to be 43 lb. Determine the x- component and the magnitude of F. Answers: Fx= F= i i T L--x h lb lb F 6atics 0.4 m. B 15 m L0.4 m 0.8 m 1.5 m 15m Three vertical wires are used to support a rectangular plate which weighs 500 N. Determine the tension in the wires.