Question

A roofing shingle elevator is lifting a 35.0-kg package to the top of a building at...

A roofing shingle elevator is lifting a 35.0-kg package to the top of a building at constant speed. The angle between the elevator track and the horizontal is 75∘. The power of the elevator is 800 W.

Part A

Determine the vertical component of the speed with which the package is moving up. Assume no friction is exerted by the incline surface on the package.

Express your answer with the appropriate units.

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Answer #1

y Let the elevator is lifted a height & in time t against the gravitational force component mgsins. rugsing ngcoso Work done

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