A 1000-kg elevator is rising and its speed is increasing at 3 m/s2. The tension force of the cable on the elevator is:
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- An elevator cab that weighs 25.8 kN moves upward. What is the tension in the cable if the cab's speed is (a) increasing at a rate of 1.06 m/s2 and (b) decreasing at a rate of 1.06 m/s2?The 66-m microwave transmission tower is steadied by three guy cables as shown. Cable AB carries a tension of 18 kN. Express the corresponding force on point B as a vector. AJ 66 m 35 m 11 m B. 38 m 27 m> 22 m 21 m 34 m Answer: T= ( i i+ i j+ i k) kNA metal box having a mass of 100.0kg is pulled along a level plane, at uniform speed, by a horizontal rope applying a force of 325 N. An additional mass of 40.0 kg is now added to the box. What must be the force in the rope to move the box at uniform speed? If the rope will not transmit a force of more than 500.0 N, what is the greatest mass which can be added to the box?
- A boy has filled his toy box with all his favorite toys and it trying to drag it across the floor. The toy box has a mass of 35 kg (including the toys) and the child pulls with a force of 24 N at an angle of 30 degrees above horizontal (he is pulling mostly horizontally, but some of the force is pulling up). What is the horizontal acceleration of the box if friction is negligible (too small to make a noticeable difference)?An athlete is pulling a tire that weighs 12,000 N. The coefficient of static friction between the tire and the ground is 0.42. If the angle that the rope makes with the horizontal is 24 degrees, what is the magnitude of the force that the woman must exert on the rope to just get the tire to start moving?You are pulling your luggage in an air port for an international flight. You know not to pack too much else they charge you extra fees so you weighted your luggage at home to be 21.4 kg. You exert a pull of 52 N in magnitude and at 25 degrees above the horizontal to ensure you can walk at a constant speed on the carpeted floor. The coefficient of friction between the caster wheels and the carpet is 0.30. What is the acceleration of your luggage (could be positive or negative)?
- A 51.9 kg crate is hung from the ceiling by two wires. Each wire makes an angle of 41 degrees with the ceiling. What is the tension (in newtons) in one of the wires?A 1000-kg elevator is rising and its speed is increasing at 3 m/s². The tension force of the cable on the elevator is: 1000 N 09800 N 6800 N O 12800 N O none of the given choicesAn elevator cabin has a mass of 364.1 kg, and the combined mass of the people inside the cabin is 180.9 kg. The cabin is pulled upward by a cable, with a constant acceleration of 1.75 m/s2. What is the tension in the cable?
- Three blocks, with mass m1 = m2 = m3 = 2 kg, are suspended from the ceiling of an elevator as shown in the figure. If the elevator moves with an upward acceleration of magnitude 3 m/s2 (a) What is the tension in the string T3? (b) What is the tension in the string T2? (c) If all strings can withstand the maximum tension of 90 N, whatmaximum acceleration can the elevator have before a stringbreaks? (Hint: think about which string will break first).An elevator’s motion is through the action of a single cable. The elevator has a weight of 2000 N. When the elevator is moving downwards at a constant velocity, how much tension is in this cable?A 2000kg elevator has a downward acceleration of 1.0 m/s/s. (a) What is the tension in its supporting cable? (b) The same elevator later has an upward acceleration of 1.5 m/s/s. What is the tension in the cable now?