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me244_hw2_345

# me244_hw2_345 - If he has a speed of 17 m/s when m...

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Online Homework System Assignment Worksheet 9/30/09 - 10:31 AM Name: ____________________________ Class: ME244 Dynamics Class #: ____________________________ Section #: ____________________________ Instructor: Koray Safak Assignment: Homework #2 Question 1: (1 point) At a given instant the 14-lb block is moving downward with a speed of 7 ft/s. Determine its speed 1 s later. Block has a weight of 4 lb, and the coefficient of kinetic friction between it and the horizontal plane is Neglect the mass of the pulleys and cord. ____________ft/s Question 2: (1 point) The 3.3-Mg helicopter maneuvers a horizontal turn having a radius of curvature m. Determine the lift force required and the angle of bank when it is flying with a constant speed of m/s. Show that increases if increases by also calculating when m/s. ____________ kN ____________ ° ____________ ° Page 1 of 3 PHGA OneKey - ME244 Dynamics 30.09.2009 http://phga.pearsoncmg.com/onekey/modules/configureTest.Login

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Question 3: (1 point) The cyclist is freely coasting down the hill defined by the shape
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Unformatted text preview: If he has a speed of 17 m/s when m, determine the resultant normal reaction he exerts on the ground and the rate of increase in his speed at this instant. He and his bicycle have a total mass of 90-kg. Neglect friction, the mass of the wheels, and the size of the bicycle. ____________ kN ____________ Question 4: (1 point) The particle has a mass of 0.1 kg and is confined to move along the smooth vertical slot due to the rotation of the arm Determine the force of the rod on the particle and the normal force of the slot on the particle when The rod is rotating with a constant angular velocity of rad/s. Assume the particle contacts only one side of the slot at any instant. Page 2 of 3 PHGA OneKey - ME244 Dynamics 30.09.2009 http://phga.pearsoncmg.com/onekey/modules/configureTest.Login ____________ N ____________ N Page 3 of 3 PHGA OneKey - ME244 Dynamics 30.09.2009 http://phga.pearsoncmg.com/onekey/modules/configureTest.Login...
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