Question

Two skaters each of mass 50.0 kg approach each other along parallel paths separated by 3.00 m. They have opposite velocities of 1.40 m/s each. One skater holds the end of a long pole of negligible mass, and the other skater grabs the other end of it as she passes. Assume the ice provides a frictionless surface. (a) Describe quantitatively the motion of the skaters after they have become connected by the pole. (b) Calculate the kinetic energy of the system. (c) If the skaters pull on the pole so as to reduce their separation to 1.00 m, what are their angular speed and (d) the new rotational kinetic energy of the system.

Answer #1

. Two skaters each of mass 50.0 kg
approach each other along parallel paths separated by 3.00 m. they
have opposite velocities of 1.40 m/s each. One skater holds the end
of a long pole of negligible mass, and the other skater grabs the
other end of it as she passes. Assume the ice provides a
frictionless surface. (a) Describe quantitatively the motion of the
skaters after they have become connected by the pole. (b) Calculate
the kinetic energy of...

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(a) Calculate the angular momentum of the system, treating each
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kg · m2/s
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