Physics, 09.10.2021 01:20 aidanfbussiness
A crane lifts a 0.7 tonne (700 KG) air conditioning unit to the top of a skyscraper 122 m high. The lifting motor of the crane is rated at 3.5 kW, and it is 66% efficient. Calculate how long it takes to raise the air conditioning unit from ground level to the top to be installed.
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A crane lifts a 0.7 tonne (700 KG) air conditioning unit to the top of a skyscraper 122 m high. The...
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