Tuesday

March 31, 2015

March 31, 2015

Posted by **SAMIR** on Sunday, January 24, 2010 at 12:08pm.

pete and john play a game of tug war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2. Sarah decideds to join the game as well. Now pete pulls on Sarah with a force of 45.0N [E] and john pulls on her with a force of 25N [N]. What's Sarah's resultant acceleration, if she weighs 294 N?

m=294N (this equals 30kg)

Fjohn=25 N [N]

Fpete=45 N [E]

Fnet=Fjohn+Fpete

=25^2 + 45^2

=51N

a=F/m

=51/30kg

=1.7m/s^2

Now, Im just confused about what angle to solve for. My diagram looks like this: have an arrowed line going west, to represent Pete and then from that arrow's head, I have an arrow going North to represent John. If this is correct, then I would solve for Tan, with the opposide side=25N and the the adjacent side equaling 45N, to give an angle of 29degrees. Is this correcct?

- PHYSICS -
**Damon**, Sunday, January 24, 2010 at 12:21pm25 N and 45 E

tangent of angle above east axis = 25/45 = .556

Angle north of east = 29 deg

angle east of north = 90-29 = 61 deg

- PHYSICS -
**Damon**, Sunday, January 24, 2010 at 12:22pmBy the way I am sure you intended to say:

= sqrt (25^2 + 45^2)

**Answer this Question**

**Related Questions**

PHYSICS - pete and john play a game of tug f war on a frictionless icy curface. ...

ATTN: DRWLS RE: PHYSICS - pete and john play a game of tug f war on a ...

PHYSICS - please check my work - pete and john play a game of tug war on a ...

PHYSICS - ANOTHER QUICKQUESTION ABOUT THIS ONE, PLEASE HELP pete and john play a...

physics - Two people, one twice as massive as the other, try to play tug of war ...

Word Problem - A quarterback and end play on their team. From the start of a ...

Math - Pete and jan compete as a team in a biathlon. Pete runs at a speed of 9 ...

math - equation pete and tom sold 41cds and tom sold 9more,.how many did pete ...

Stats - Mark and job are basketball players and will play a game. In the game, ...

Statistics - Mark and job are basketball players and will play a game. In the ...