It's 6, I think, the wheel. Look at all the other ones there: most of them have to do with people, who are most definitely not machines and not simple! A row boat is too big of a thing to be simple, and I don't think it's the saw. That leaves the wheel. Um, look at the note:
Note: this is what I remember from 4th grade science. Don't quote me on it.
I'm having trouble with identifying simple machine.
1)A row boat
2)saw
3)an arm flexing
4)a person hiking
5)a person catching
6)a bikes wheel
Help please!
3 answers
http://www.infoplease.com/ce6/sci/A0859409.html
the row boat is simple because it has rows that push the boat using the force of water as a levy to push it. Like a saw is not a machine just a tool, an arm is not a machine, a person hiking is not a machine, person catching is not a machine, wheel can be part of a machine but is not a machine in it's self.
1 answer