ME 2210 Midterm: me2210test2r13
31 Jan 2019
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Open book, closed notes, do not write on this sheet. Problem 1 (45 points): the two particles, a and b, connected by a rigid rod of negligible mass, are initially at rest on a smooth horizontal surface. If a is given the initial velocity v0 as shown, determine the velocities of a and b when the assembly has rotated through. 90 using the principles of conservation of linear momentum, conservation of angular momentum, and conservation of energy. When the assembly has rotated through 90 , assume that both particles have velocity components in the x and y directions. Problem 2 (25 points): at the instant shown, bar cd is rotating with an angular velocity. Letting l = 2. 25 ft, determine the angular velocities of bars ab and bc. (answers: ab = 7. 071 rad/s, bc = Problem 3 (30 points): refer to the figure in problem 2.
