Physics, 02.10.2020 23:01 studybug7952
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A lift in a shopping centre can transport 20 people to a height of 54 m in a time of 14 s. The lift compartment has a mass of 1420 kg and the average person has a mass of 60 kg.
a) Calculate the combined mass of the compartment and the 20 people in it.
b) Calculate the energy gained as the lift travels upwards.
Think about the liſt as it rises. Which form of energy is increasing?
c) Calculate the rate at which energy is transferred by the lift motor to the compartment.
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A lift in a shopping centre can transport 20 people to a height of 54 m in a time of 14 s....
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