PHYSICS

posted by .

ANOTHER QUICKQUESTION ABOUT THIS ONE, PLEASE HELP

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 12:21pm
25 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

SO THE ANSWER IS 61 DEGREES? HAVE I GOT MY DIAGRAM SET UP WRONG THEN, BECAUSE I THOUGHT THAT I WAS SOLVING FOR THE TAN 25/45

  • PHYSICS -

    Sarah needs to replace part of the metal railing on her deck and wants the new railing to match the existing railing. However, she does not know what metal the railing is made from. Which is a property that she can use to identify the metal?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. PHYSICS

    pete and john play a game of tug f 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 a)what's the magnitude of the force that …
  2. ATTN: DRWLS RE: PHYSICS

    pete and john play a game of tug f 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 a)what's the magnitude of the force that …
  3. PHYSICS - please check my work

    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. …
  4. PHYSICS

    CAN SOMEONE PLEASE CHECK THE LAST PART OF THIS QUESTION?
  5. maths

    The probability that Richard beats John at badminto is 0.7. The probability that Richard beats John at sqaush is 0.6. These events are independant. Calculate the probabilty that, in a week when they play one game of badminton and sqaush: …
  6. Physics

    Jane and John, with masses of 50 kg and 60 kg, respectively, stand on a frictionless surfact 10 m apart. John pulls on a rope that connects him to Jane, giving Jane an acceleration of 0.92 m/s^2 toward him. (a) What is John's acceleration?
  7. Statistics

    Mark and job are basketball players and will play a game. In the game, Mark will get 2 free throw attempts and John will get three. Overall, Mark makes a basket on 90% of free throw attempts and John makes it 50% of the time. Mark …
  8. Stats

    Mark and job are basketball players and will play a game. In the game, Mark will get 2 free throw attempts and John will get three. Overall, Mark makes a basket on 90% of free throw attempts and John makes it 50% of the time. Mark …
  9. English

    1. There was a tug-of-war on the playground. The teams drew at 2-2. 2. They did a tug-of-war in the playing field. The game ended in draw. 3. They played the tug-of war at the playground. Class 2-1 won the game at 3-2. (Would you check …
  10. math

    Emily has 5u game cards. John has 8/13 fewer game cards than Emily. Find the average number of game cards that Emily and John have in all in terms of u.

More Similar Questions