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An 8 9 0 kg skier rides a 2 9 0 0 m long lift to lift to the top of a mountain. The lift

890

kg skier rides a

2900

m long lift to lift to the top of a mountain. The lift makes an angle of

15

degrees with the horizontal. a

)

What is the change in the skiers gravitational potential energy? b

)

with the knowledge the that the ski lift moves at constat speed, what is the work the lift did to take the skier to the top of the mountian?

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