Posted by **Barbara ** on Saturday, October 24, 2009 at 12:58pm.

Napolweon pencil has a mass of 3 grams (0.27Napoleon ) when he lifts his pencil from the desk to his paper he moves it an average of 20cm (o.20m) He then returns it to his desk moving it another 20cm How much work did he do on his pencil? w=FXD

- science -
**NeedHelp!**, Saturday, October 24, 2009 at 2:33pm
Well, work= force x displacement

(as you stated)

but if he lifts his pencil 20 cm, then lowers it back down to 20 cm, his displacement= 0

therefore, he did 0 joules of work

## Answer this Question

## Related Questions

- science - Napolweon pencil has a mass of 3 grams (0.27Napoleon ) when he lifts ...
- To:BobPursley - Earlier you told me "hold a pencil up. A real pencil. I bet you ...
- Physics - The four masses shown in the figure below are connected by massless, ...
- math - margarit liked to balance things. she balanced 3 pencil sharpeners and 2 ...
- Maths - A ruler is 10 cents more than a pencil. If 2 rulers and 5 pencil costs 3...
- physics pencil torqu - A pencil, 15.7 cm long, is released from a vertical ...
- science - Put a pencil straight down into a glass of water. Notice whether the ...
- science - How do the physical properties of the parts of a pencil affect howthe ...
- Math - Margarit liked to balance things. She balanced 3 pencil sharpeners and 2 ...
- 6th grade math - sally's pencil is 15 hundredths of a meter long(0.15).Edward's ...

More Related Questions