Physics 15200- HW11

Physics 15200- HW11 - A(n) 144 g ball is dropped From a...

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lai (yl8859) – HW11 – Ross – (15200) 1 This print-out should have 6 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points Water ±ows over Victoria ²alls, which is 128 m high, at an average rate oF 1 . 56 × 10 6 kg/s. The acceleration oF gravity is 9 . 81 m / s 2 . IF halF the potential energy oF this water were converted into electric energy, how much power would be produced by these Falls? Answer in units oF MW. 002 (part 1 oF 2) 10.0 points A bead slides without Friction around a loop- the-loop. The bead is released From a height 9 m From the bottom oF the loop-the-loop which has a radius 3 m. The acceleration oF gravity is 9 . 8 m / s 2 . 9 m 3 m A What is its speed at point A ? Answer in units oF m / s. 003 (part 2 oF 2) 10.0 points How large is the normal Force on it at point A iF its mass is 7 g? Answer in units oF N. 004 10.0 points
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Unformatted text preview: A(n) 144 g ball is dropped From a height oF 63 . 6 cm above a spring oF negligible mass. The ball compresses the spring to a maximum displacement oF 4 . 13155 cm. The acceleration oF gravity is 9 . 8 m / s 2 . x h Calculate the spring Force constant k . Answer in units oF N / m. 005 (part 1 oF 2) 10.0 points Betty weighs 417 N and she is sitting on a playground swing seat that hangs 0 . 54 m above the ground. Tom pulls the swing back and releases it when the seat is 1 . 06 m above the ground. The acceleration oF gravity is 9 . 8 m / s 2 . How Fast is Betty moving when the swing passes through its lowest position? Answer in units oF m / s. 006 (part 2 oF 2) 10.0 points IF Betty moves through the lowest point at 1 . 5 m / s, what is the magnitude oF the work done on the swing by Friction? Answer in units oF J....
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This note was uploaded on 02/24/2011 for the course PHYS 152 taught by Professor Button during the Winter '08 term at IUPUI.

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