Starting with an initial speed of 6.01 m/s at a height of 0.352 m, a 2.61-kg ball swings downward and strikes a 4.18-kg ball that is at rest, as the drawing shows. (a) Using the principle of conservation of mechanical energy, find the speed of the 2.61-kg ball just before impact. (b) Assuming that the collision is elastic, find the velocity (magnitude and direction) of the 2.61-kg ball just after the collision. (c) Assuming that the collision is elastic, find the velocity (magnitude and direction) of the 4.18-kg ball just after the collision. (d) How high does the 2.61-kg ball swing after the collision, ignoring air resistance? (e) How high does the 4.18-kg ball swing after the collision, ignoring air resistance?

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Slope and Deflection

The slope in a deflected beam is described as an angle in radians made by the tangent of the section with the original axis of the beam. The deflection at any point on the axis of the beam is defined as the lateral displacement of the point before and after loading.