Problem Set 2

# Problem Set 2 - ME240 Fall 2008 Problem Set 2 Due September...

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Problem Set 2: Due September 19 Problem 1 In the design of a control mechanism, the vertical slotted guide is moving with a constant velocity = 15 in/sec during the interval of motion from x = -8 in to x = +8 in. For the instant when x = 6 in, calculate the normal and tangential components of acceleration of the pin P, which is confined to move in the parabolic groove. Problem 2 The car passes over the top of a vertical curve at A with a speed of v A and then passes through the bottom of a dip at B at the same speed. The radii of curvature of the road at A and B are both ρ and the mass center of the car is at a distance h from the road. Find the speed of the car (in terms of ρ , g and h) if the normal force between the road and the tires at B is twice that at A. Problem 3 The coefficient of kinetic friction between the 15-kg box and the inclined surface is μ k = 0.2. The box is sliding up the incline with a velocity of 2 m/s when it is subjected to a constant horizontal force F = 200 N. What is the velocity of the box 3 seconds later? 1

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## This note was uploaded on 04/08/2010 for the course MECHENG 240 taught by Professor Perkins during the Fall '09 term at University of Michigan.

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Problem Set 2 - ME240 Fall 2008 Problem Set 2 Due September...

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