Posted by **Iklishi** on Sunday, November 6, 2011 at 7:34pm.

An airplane passenger carries a 260 N suitcase up the stairs, a displacement of 3.80 m vertically, and 4.30 m horizontally.

(a) How much work does the passenger do?

(b) The same passenger carries the same suitcase back down the same stairs. How much work does the passenger do now?

- Physics -
**bobpursley**, Sunday, November 6, 2011 at 7:36pm
work= mg*height

this time,gravity does work on suitcase,so it is negative.

- Physics -
**Iklishi**, Sunday, November 6, 2011 at 7:48pm
So how am I supposed to use the heights given from the problem? Subtract 4.30 m from 3.80 m?

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