Recent content by Eggphys

  1. E

    Calculating the Force of the Deltoid Muscle to Raise an Arm

    Just bumping back to the top.
  2. E

    Calculating the Force of the Deltoid Muscle to Raise an Arm

    So i decided to come at this from another angle. First i solved for F[SIZE="1"]g, F[SIZE="1"]g=1.57*9.8 = 15.39 Then to solve for F[SIZE="1"]m, F[SIZE="1"]m=15.39cos 13.2 = 14.98 But the correct answer is 67.38. I am not sure where to go from here to get the correct answer. Any help would...
  3. E

    Calculating the Force of the Deltoid Muscle to Raise an Arm

    After going over my work abit more I see I have no clue what I am doing:frown: Im not sure how to implement the angle into the equation or what a is in the x direction(Isnt it 0?) Would F[SIZE="1"]y just be F[SIZE="1"]y=1.56*9.8? Any help on where to start would be great. Thanks:smile:
  4. E

    Calculating the Force of the Deltoid Muscle to Raise an Arm

    Homework Statement The main muscle responsible for raising an arm is the deltoid. The deltoid muscle connects at the upper end of the shoulder, extends over the upper arm bone (humerus), and attaches near the elbow. Effectively there are three forces involved in raising the arm: (i) the force...
  5. E

    Solving for Horizontal Distance of an Arrow Shot Over Level Ground

    Sweet, I appreciate the help mate.
  6. E

    Solving for Horizontal Distance of an Arrow Shot Over Level Ground

    Oh, a in the x direction is 0 right? So that make's the equation 6.06=2.6V[SIZE="1"]o which gives Initial Velocity of 2.33. Which is correct right?. Haha, I can't believe it was that simply of a mistake. Thanks mate:smile:
  7. E

    Solving for Horizontal Distance of an Arrow Shot Over Level Ground

    1/2at^2 so 4.9*2.6^2
  8. E

    Solving for Horizontal Distance of an Arrow Shot Over Level Ground

    I have another projectile motion problem and instead of making another thread ill just update this one. 1. Homework Statement At Acapulco, professional divers jump from a 33.1 m high cliff into the sea. At the base of the cliff, a rocky ledge sticks out for a horizontal distance of 6.06...
  9. E

    Solving for Horizontal Distance of an Arrow Shot Over Level Ground

    Thanks a lot mate, I see where I went wrong with the algebra. I really appreciate it:smile:
  10. E

    Solving for Horizontal Distance of an Arrow Shot Over Level Ground

    Thanks for the quick response and cheers for the welcome:smile:. I'm not quite sure how to do each steps. For finding the time to take to fall I used X=X[SIZE="1"]o+V[SIZE="1"]ot+(1/2)at^2 then adding in the values 0=1.5+4.9t^2 and getting the answer 0.25 then using the same equation for...
  11. E

    Solving for Horizontal Distance of an Arrow Shot Over Level Ground

    Homework Statement An archer shoots an arrow over level ground. The arrow leaves the bow at a height of 1.50 m with an initial velocity of 79.5 m/s in a horizontal direction. At what horizontal distance (in m) does this arrow strike the ground? The answer is 44m but I don't know how to get to...