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How much work is done by a person lifting a 2 kg object from the bottom of a well at a constant speed? The wel?
How much work is done by a person lifting a 2 kg object from the bottom of a well at a constant speed? The well is 10 m deep.
3 Answers
- 9 years agoFavorite Answer
I believe that work is equal to the product of the force applied and the displacement. So the force will be F=(2 kg)(9.8 m/s^2)=19.6 N
Then the work will be W=Fd=(19.6 N)(10 m)=196 Nm or 196 Joules (J)
- 9 years ago
work done = force x distance moved in the direction of the force
in this case the force is the weight = mass x acceleration of free fall= 2 x 10 = 20 N (u can use 9.81 for acceleration of free fall if u wanna be more accurate, in this case workdone is 196 joules)
So workdone is 20 x 10 = 200 joules
You will also notice that it is equal to the gravitational potential energy.
- Anonymous9 years ago
work = force by distance
= 2(9.81)*10= 196.2 joules
