In the figure, a package of mass m hangs from a short cord that is tied to the wall via cord 1 and to the ceiling via cord 2. Cord 1 is at angle = 48.6° with the horizontal; cord 2 is at angle 0. (a) For what value of 0 is the tension in cord 2 minimized? (b) What is the ratio of the minimum tension in cord 2 to the weight of the package? (a) Number i Units (b) Number i Units
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- In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force F A of magnitude 215 N, and Charles pulls with force F cof magnitude 181 N. Note that the direction of F cis not given. What is the magnitude of Betty's force F B if Charles pulls in (a) the direction drawn in the picture or (b) the other possible direction for equilibrium? Alex Charles 141° Betty (a) Number i Units (b) Number i UnitsCurrent Attempt in Progress In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force FA of magnitude 218 N, and Charles pulls with force Fcc magnitude 175 N. Note that the direction of Fc is not given. What is the magnitude of Betty's force FB if Charles pulls in (a) the direction drawn in the picture or (b) the other possible direction for equilibrium? 150° Alex (a) Number (b) Number Charles Betty Units Units 2A sphere of mass 5.4 × 104 kg is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes a constant angle of 18° with the vertical. Find (a) the magnitude of that push and (b) the tension in the cord. (a) Number i Units (b) Number i Units
- The figure shows a section of a cable-car system. The maximum permissible mass of each car with occupants is 2200 kg. The cars, riding on a support cable, are pulled by a second cable attached to the support tower on each car. Assume that the cables are taut and inclined at angle 0 = 39º. What is the difference in tension between adjacent sections of pull cable if the cars are at the maximum permissible mass and are being accelerated up the incline at 0.85 m/s²? Number Units Support cable- Pull cableA crane suspends a 600-lb steel beam horizontally by support cables (with negligible weight) attached from a hook to each end of the beam. The support cables each make an angle of 60° with the beam. Find the tension vector in each support cable and the magnitude of each tension. (Let T₁ and T₂ be the tension vectors of the left and right cables, respectively. Round all numerical values to two decimal places.) 2 T₁ = T₂ = |T₁| = IT₂1 = Need Help? Submit Answer 60° X X Read It 60° i Solox+ || VOO! ca Op Fu Sy Re Se Ve Tri Gr +An elevator cab that weighs 22.2 kN moves upward. What is the tension in the cable if the cab's speed is (a) increasing at a rate of 1.08 m/s? and (b) decreasing at a rate of 1.08 m/s? (a) Number i Units (b) Number i Units
- An elevator cab that weighs 23.2 kN moves upward. What is the tension in the cable if the cab's speed is (a) increasing at a rate of 1.02 m/s? and (b) decreasing at a rate of 1.02 m/s?? (a) Number i Units (b) Number i UnitsIn a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force F A of magnitude 214 N, and Charles pulls with force F c of magnitude 183 N. Note that the direction of F c is not given. What is the magnitude of Betty's force F B if Charles pulls in (a) the direction drawn in the picture or (b) the other possible direction for equilibrium? Alex Charles 145° Betty (a) Number i Units (b) Number i Units >Suppose you have a stack of 17 identical steel bars (steel bars have a mass of 1.00kg each). You are required to pull out bar number 16 from the stack (counting from the top of the stack down). Assuming that your assistant holds all other bars in place. If the coefficient of friction between steel and steel is 0.750, how hard do you have to pull (in N)?
- A block of mass 1.45 kg is resting on a board with friction.The board is inclined until the mass just starts to slide. If the angle of the incline when the mass just barely begins to slide is 17.5 degrees,what is the coefficient of static friction between the block and the board?In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force É A of magnitude 222 N, and Charles pulls with force magnitude 188 N. Note that the direction of F c is not given. What is the magnitude of Betty's force F B if Charles pulls in (a) the c of direction drawn in the picture or (b) the other possible direction for equilibrium? Alex Charles 140° Betty (a) Number i Units (b) Number i UnitsA sphere of mass 2.1 × 104 kg is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes a constant angle of 40° with the vertical. Find (a) the magnitude of that push and (b) the tension in the cord. (a) Number i Units N (b) Number i Units >