Sunday

December 21, 2014

December 21, 2014

Posted by **ajo** on Sunday, December 9, 2007 at 4:23pm.

Can anyone please give me some hints to do this?THANKS A LOT!

- physics -
**drwls**, Sunday, December 9, 2007 at 5:39pmFirst, compute the work done in method 1. That would be M g H = 45*9.8*3.0 sin A = 1323 sin A Joules. A is the angle of the place to the horizontal.

With the ramp, you do twice as much work, or 2646 J sin A. If 485 J of this was overcoming friction, the potential energy change was

2646 sin A - 485

This equals the potential energy change with method 1, or 1323 sin A. Therefore

2646 sin A -485 = 1323 sin A

485 = 1323 sin A

sin A = 0.367

A = ?

- physics -
**ajo**, Sunday, December 9, 2007 at 6:02pmi don't understand...this part:

the potential energy change was

2646 sin A - 485

This equals the potential energy change with method 1, or 1323 sin A. Therefore

2646 sin A -485 = 1323 sin A

485 = 1323 sin A

can you please explain it in details£¿

- physics -

**Answer this Question**

**Related Questions**

physics - At the end of the semester, you are loading your gear into a van to ...

physics - A 54.5-kg passenger in the back seat of a van is wearing a seat belt ...

physics - juana slides a crate along the floor of the moving van the ...

Physics - juana slides a crate along the floor of the moving van the coefficient...

spanish - is this correct? ¿Adónde van algunos niños antes de ir a la escuela ...

physics - Two workers are loading crates onto a pick up truck. Worker 1 lifts ...

Finance - Your company is considering a replacement of an old delivery van with ...

Accounting - Your company is considering a replacement of an old delivery van ...

finance - Your company is considering a replacement of an old delivery van with ...

Math, need help asap - The ramp shown below is used to move crates of fruit to ...