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me244_hw3_678

# me244_hw3_678 - acts on the plate If a block having a...

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Online Homework System Assignment Worksheet 10/21/09 - 11:12 AM Name: ____________________________ Class: ME244 Dynamics Class #: ____________________________ Section #: ____________________________ Instructor: Koray Safak Assignment: Homework #3 Question 1: (1 point) The 2.5-kg collar is attached to a spring that has an unstretched length of 3 m. If it is drawn to point and released from rest, determine its speed when it arrives at point ____________m/s Question 2: (1 point) The motor is used to hoist the loaded 475 kg elevator upward with a constant velocity m/s. If the motor draws 90 kW of electrical power, determine the motor's efficiency. Neglect the mass of the pulleys and cable. Page 1 of 3 PHGA OneKey - ME244 Dynamics 21.10.2009 http://phga.pearsoncmg.com/onekey/modules/configureTest.Login

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____________( ) Question 3: (1 point) Four inelastic cables are attached to a plate and hold the 20-in. spring 6 in. in compression when no force
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Unformatted text preview: acts on the plate. If a block having a weight of 5 lb, is placed on the plate and the plate is pushed down in. and released from rest, determine how high the block rises from the point where it was released. Neglect the mass of the plate. ____________in. Page 2 of 3 PHGA OneKey - ME244 Dynamics 21.10.2009 http://phga.pearsoncmg.com/onekey/modules/configureTest.Login Question 4: (1 point) If the roller-coaster car has a speed ft/s when it is at and coasts freely down the track, determine the speed it attains when it reaches point Also determine the normal force a 200-lb passenger exerts on the car when it is at At this point the track follows a path defined by Neglect the effects of friction, the mass of the wheels, and the size of the car. ____________ ft/s ____________ N Page 3 of 3 PHGA OneKey - ME244 Dynamics 21.10.2009 http://phga.pearsoncmg.com/onekey/modules/configureTest.Login...
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me244_hw3_678 - acts on the plate If a block having a...

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