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23 Nov 2019
Two skaters, each of mass 80 kg, approach each other along parallelpaths separated by 3.9 m. They have equal and opposite velocitiesof 1.4 m/s. The first skater carries one end of a long pole withnegligible mass, and the second skater grabs the other end of it asshe passes; see the figure. Assume frictionless ice. Describequantitatively the motion of the skaters after they have becomeconnected by the pole. What is their angular speed?
I figured out the first one.
7.18Ã10-1 rad/s
By pulling on the pole, the skaters reduce their separation to 1.0m. What is their angular speed then?
Calculate the ration of the final kinetic energy to the originalkinetic energy.
Can anyone help me get started on the second part?
Two skaters, each of mass 80 kg, approach each other along parallelpaths separated by 3.9 m. They have equal and opposite velocitiesof 1.4 m/s. The first skater carries one end of a long pole withnegligible mass, and the second skater grabs the other end of it asshe passes; see the figure. Assume frictionless ice. Describequantitatively the motion of the skaters after they have becomeconnected by the pole. What is their angular speed?
I figured out the first one.
7.18Ã10-1 rad/s
By pulling on the pole, the skaters reduce their separation to 1.0m. What is their angular speed then?
Calculate the ration of the final kinetic energy to the originalkinetic energy.
Can anyone help me get started on the second part?
Lelia LubowitzLv2
31 Aug 2019
