A 1000-W motor power a hoist used to lift cars at a servicestation. a). How much

Question

A 1000-W motor power a hoist used to lift cars at a servicestation. a). How much time would it take to raise a 1,200kg car2m? b). If it is replaced with a 2,000W motor, how longwould it take? I need this from start to finish, I am so lost. Thank you. A 1000-W motor power a hoist used to lift cars at a servicestation. a). How much time would it take to raise a 1,200kg car2m? b). If it is replaced with a 2,000W motor, how longwould it take? I need this from start to finish, I am so lost. Thank you.

Explanation / Answer

A 1000-W motor power a hoist used to lift cars at a servicestation. a). How much time would it take to raise a 1,200kg car2m?
power=work/time=force*distance/ time
so time=force*distance/power=1200*9.8*2/1000=23.52sec b). If it is replaced with a 2,000W motor, how longwould it take?
time=force*distance/power=1200*9.8*2/2000=11.76sec

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