Tuesday, February 21, 2012

Science question please help........?

Last page of my home work tonight but heres the question.....



The tower of doom, at elitch gardens in denver, co lifts 15 people 50 m into air. the engineers assume the average person has mass of 70 kg.



How much rider "Weight" does the ride lift into the air? {Neglect the weight of the cars and air resistance}



How much force must the ride produce to do this?



How much work does the ride do to lift the riders up to a height of 50 meters?



how much work does gravity do while the riders are lifted up to a height of 50 meters?Science question please help........?
weight=15*70*9.8



Force for constant speed is the same as the weight



work=weight times distance

50*15*70*9.8



The work of gravity is minus the work of the force

-50*15*70*9.8



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