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# 5. A child runs toward a playground carousel [along a line tangent to the edge} and jumps on, holding on ght as the carousel begins to rotate. What

A child runs toward a playground carousel (along a line tangent to the edge) and jumps on, holding on tight as the carousel begins to rotate. What fraction of her initial kinetic energy is lost in the collision?

Express your answer in terms of some or all of the following parameters: the child's initial speed v0, her mass m, and the radius R and mass M of the carousel, which you can assume has the moment of inertia of a solid disk.

5. A child runs toward a playground carousel [along a line tangent to the edge} and jumps on, holding on ﬁght asthe carousel begins to rotate. What fraction of her initial kinetic energy is lost in the collision? Express 1,iour answer in terms of some or all of the following parameters: the child's initial speed v0, her mass n1.and the radius R and mass M of the carousel. which you can assume has the moment of inertia of a solid disk.