Eastern Mediterranean University Faculty of Engineering Department of Mechanical Engineering Rigid Body Dynamics (MENG233) Instructor: Assistant Professor Dr. Mostafa Ranjbar Assistant: Sadegh Mazloomi Homework #2 Sunbmitted By: Name: ST ID Submission Deadline: 22th April 2015 Q1- A sphere is fired downwards into a medium with an initial speed of 27 m>s. If it experiences a deceleration of a = ( -6t) m>s2, where t is in seconds, determine the distance traveled before it stops. Q2- It is observed that the time for the ball to strike the ground at B is 2.5 s. Determine the speed vA and angle uA at which the ball was thrown. vA A uA 1.2 m 50 m B Q3Determine the velocity of t he log if t he truck at C pulls the cable 4 m/s to the right. B C Q4At the instant shown, cars A and B are traveling at speeds of 25 m/s and 30 m/s, respectively. If B is increasing its speed by 5 m>s2, while A maintains a constant speed, determine the velocity and acceleration of B with respect to A. Car B moves along a curve having a radius of curvature of 300 m. vB = 30 m/s B A vA = 25 m/s 30° Q5Block A weighs 10 N and block B weighs 3 N. If B is moving downward with a velocity 1vB21 = 3 m >s at t = 0, determine the velocity of A when t = 1 s . The coefficient of kinetic friction between the horizontal plane and block A is mA = 0.15. (Use impulse and momentum concept) A sale will their destroy of and any courses part the is This provided integrity of and work this assessing (vB)1 3 m /s B Q6- A 750-mm-long spring is compressed and confined by the plate P, which can slide freely along the vertical 600-mm-long rods. The 40-kg block is given a speed of v = 5 m>s when it is h = 2 m above the plate. Determine how far the plate moves downwards when the block momentarily stops after striking it. Neglect the mass of the plate. v ⫽ 5 m/s A h⫽2m P k ⫽ 25 kN/m 600 mm Q7-