For example, the energy may
be dissipated in the ball during the collision as a result of
internal friction, or energy may be lost as a result of a permanent
deformation of the ball or the surface. Alternatively,
energy may be stored in the ball as a result of its compression
and subsequently dissipated after the rebound either in
internal modes of oscillation or by a slow recovery of the
ball to its original shape. A review of head-on collisions
between solid metal spheres was presented 40 years ago in
this journal by Barnes.2,3 Since that time, there have been
many other articles on colliding balls,4,5 but only one6 included
force wave forms
For example, the energy maybe dissipated in the ball during the collision as a result ofinternal friction, or energy may be lost as a result of a permanentdeformation of the ball or the surface. Alternatively,energy may be stored in the ball as a result of its compressionand subsequently dissipated after the rebound either ininternal modes of oscillation or by a slow recovery of theball to its original shape. A review of head-on collisionsbetween solid metal spheres was presented 40 years ago inthis journal by Barnes.2,3 Since that time, there have beenmany other articles on colliding balls,4,5 but only one6 includedforce wave forms
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