HW10 - help support the ±oodlight. Assume the mass oF the...

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kuehner (rjk679) – HW10 – Mackie – (20211) 1 This print-out should have 5 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points A uniForm bar oF length 28 m and mass 1 kg is attached to a wall with a hinge that exerts on the bar a horizontal Force H x and a vertical Force H y . The bar is held by a cord that makes a 90 angle with respect to bar and 36 with respect to wall. 28 m 1 kg 36 What is the magnitude oF the horizontal Force H x on the pivot? The acceleration oF gravity is 9 . 8 m / s 2 . Answer in units oF N. 002 (part 1 oF 3) 10.0 points A ±oodlight with a mass oF 38 kg is used to illuminate the parking lot in Front oF a library. The ±oodlight is supported at the end oF a horizontal beam that is hinged to a vertical pole, as shown. A cable that makes an angle oF 39 with the beam is attached to the pole to
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Unformatted text preview: help support the ±oodlight. Assume the mass oF the beam is negligible when compared with the mass oF the ±oodlight. 38 kg 39 ◦ Note: ²igure is not drawn to scale. ²ind the Force F T provided by the cable. The acceleration oF gravity is 9 . 81 m / s 2 . Answer in units oF N. 003 (part 2 oF 3) 10.0 points ²ind the horizontal Force exerted on the beam by the pole. Answer in units oF N. 004 (part 3 oF 3) 10.0 points ²ind the vertical Force exerted on the beam by the pole. Answer in units oF N. 005 10.0 points A uniForm 6 . 2 m tall aluminum ladder is lean-ing against a Frictionless vertical wall. The ladder has a weight oF 231 N. The ladder slips when it makes a 44 . ◦ angle with the horizon-tal ±oor. Determine the coe³cient oF static Friction between the ladder and the ±oor....
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This note was uploaded on 03/24/2010 for the course PHYSICS 2202 taught by Professor Mihalisin during the Spring '09 term at Temple.

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