ugh. i dont get this. help please?

0 ⤊

ugh. i dont get this. help please?

help me please.

1. an input force of 35N is applied to a maching with a mechanical advantage of 0.75. what is the size of the load this maching could lift (how large is the output force)? formula and answer.

2. you did 170 joules of work lifting a 140N back pack. how high did u life the pack? formula and answer.

3. what is the potential energy of a 10 N book that is places on a shelf that is 2.5 meters high? (Mass of the object times the accelertaion of gravity (g) is the same as the wieght of the object in newtons.) formua and answer.

2007-03-05 09:39:30 · 2 answers · asked by Anonymous in Education & Reference ➔ Homework Help

2 answers

i dont know but good luck!!!!!!! hope ya do good!!!!!!

2007-03-05 09:46:16 · answer #1 · answered by Anonymous · 0⤊ 0⤋

huh? lol sry cant help u there. good luck though!! aks ur parents or call a friend

2007-03-05 17:56:43 · answer #2 · answered by blue_Eyes03 2 · 0⤊ 0⤋