A person holds a 12 kg crate 0.9 meters off the ground for 6 seconds. What is the work done done. Work is in jouls...please someone help, I've tried everything

Question

anonymous · Answer

The formula used is work done= force x distance (or displacement).
I'm not too familiar with this but from what I've learnt, to find the force, you have to use the formula F=mg. Therefore,
$$F= 12kg \times 9.8 ms ^{-2}$$ $$= 117.6 N$$
Since, we already know that the displacement is 0.9m, we can just plug our values into the initial formula.$$W=Fd$$ $$=117.6N \times 0.9m$$ $$= 105.8 J$$

I applied what I learnt. I really don't know where time fits in though. Keep researching, check google books and maybe you'll stumble across something helpful.

shamim · Answer

I think the body is static

shamim · Answer

m i right?

shamim · Answer

If so
Then displacement d=0
Nd work w=0