How much work is done against the gravitational force on a 3.0 kg object when it is carried from the ground floor to the roof of a building, a vertical climb of 240 m?

godslight2006

1 year ago

W=MGH
were m=3.0kg { convert to gram)
3.0/1000=0.003g.
so,
W=MGH
=0.003*10*240
=7.2 kJ

Desfy

1 year ago

Myschool is actually wrong because if you are using 9.8ms2 as the acceleration due to gravity, your calculation will be
3.0 x 9.8 x 240 = 7.1kj. But you have to approximate 9.8 to 10 ms2
3.0 x 10 x 240 = 7.2kj.
Sure

Ajibike6233

1 year ago

the question and answer is not clear

Ajibike6233

1 year ago

I didn't understand question 21 clly

Ajibike6233

1 year ago

clearly