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Two particles, m₁ = 2m and m₂ = m, are suspended on massless cords of the same length l = 1.00 m so that they touch each other (see Fig. below). Particle 1 is displaced to an angle of 30^o with the vertical and let go. After the particles collide, the cord attached to particle 2 comes to a maximum angle of 45^o.

571_Two particles are suspended on massless cords.png

Find the speed of mass m₁ before the collision.

Find the speed of mass m₁ and m₂ after the collision.

Find the relative change of kinetic energy during the collision (DK/Ki).

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