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21. A 200 kg uniform sign hangs motionless from two identical wires. The wires are attached to each end of the sign as s
Posted: Mon May 09, 2022 6:21 pm
by answerhappygod
- 21 A 200 Kg Uniform Sign Hangs Motionless From Two Identical Wires The Wires Are Attached To Each End Of The Sign As S 1 (95.52 KiB) Viewed 23 times
21. A 200 kg uniform sign hangs motionless from two identical wires. The wires are attached to each end of the sign as shown. Both wires run vertically and attach to the ceiling. What is the tension in the left wire? (a) 100 N (b) 200 N (c) 980 N (d) 1960 N Vote for Pedro 22. In the previous problem, what happened to the wires when the sign was hung? (a) they got slightly shorter (b) they got slightly longer (c) they got wider (d) nothing changed 23. A crane raises a 90 kg piano from the ground to a balcony that is 12 m above the ground (the piano starts and ends motionless). How much work was done by the crane on the piano? (a) 10,600 J (b) 1,080 J (c) 13,000 J (d) 16,600 J