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  1. M

    Easy Homework Problem

    I got 5.86 J does that sound right?
  2. M

    Easy Homework Problem

    so i would find the y and x components for each of the forces then add them up and use Pythagorean theorem then multiply that by the distance? For the angle of F2 should it be 270-51.6=218.4 degrees and should angle of F1 be 180 degrees?
  3. M

    Easy Homework Problem

    Here's a diagram: http://imgur.com/DAJ8G.gif So would I find the magnitude of the components add them up then multiply that by the distance?
  4. M

    Easy Homework Problem

    1. Figure 7-30 shows an overhead view of three horizontal forces acting on a cargo canister that was initially stationary but that now moves across a frictionless floor. The force magnitudes are F1 = 2.28 N, F2 = 4.54 N, and F3 = 8.24 N, and the indicated angles are θ2 = 51.6° and θ3 = 35.8°...
  5. M

    Using LRStruct to pass a test

    Okay I understand that but thats the exact same thing I wrote. That's not helping me.
  6. M

    Using LRStruct to pass a test

    1. Define this method so that it adds the Strings in inputto an initially empty LRStruct<String> so that they appearin the same order. Example: if input contains "a", "b" and "c", in that order, the returned list must contain "a", "b" and "c", in that order. LRStruct Class...
  7. M

    Force and Motion Question

    1. In Fig. 6-50, block 1 of mass 4.0 kg and block 2 of mass 6.6 kg are connected by a string of negligible mass and are initially held in place. Block 2 is on a frictionless surface tilted at θ = 38o. The coefficient of kinetic friction between block 1 and the horizontal surface is 0.18. The...
  8. M

    Centripetal Force Question

    Nope it was wrong :(
  9. M

    Centripetal Force Question

    Well you copied my answers and thats all that matters you know
  10. M

    Centripetal Force Question

    The exact wording is what is above for the question. Alright if youre sure I'll try it out.
  11. M

    Centripetal Force Question

    Well here's a hint that I get from Wiley Plus Write Newton's second law for forces along a vertical y axis. Is the (centripetal) acceleration up or down? What is the gravitational force? (For safety, the car has wheels both above and below the track.)
  12. M

    Centripetal Force Question

    So now were back to this as the answer? (1290(9.32)/20)-(1290*9.8)= -7063N (1290(182)/20)-(1290*9.8)= 8256N
  13. M

    Centripetal Force Question

    So it should look like this? (1290(9.32)/20)+(1290*9.8)=18221N (1290(182)/20)+(1290*9.8)=33540N Sorry if I'm being annoying I'm on my last attempt for my online homework so I want to make sure it's correct before I submit it.
  14. M

    Centripetal Force Question

    Oh so would I find the weight now and subtract them?
  15. M

    Centripetal Force Question

    1. A roller-coaster car has a mass of 1290 kg when fully loaded with passengers. As the car passes over the top of a circular hill of radius 20 m, its speed is not changing. (a) At the top of the hill, what is the normal force (using the negative sign for the downward direction) FN on the car...
  16. M

    Two Dimensional Motion Problem

    1. Tarzan, who weighs 790 N, swings from a cliff at the end of a 24.2 m vine that hangs from a high tree limb and initially makes an angle of 26.3° with the vertical. Assume that an x axis points horizontally away from the cliff edge and a y axis extends upward. Immediately after Tarzan steps...
  17. M

    One Dimensional Force Problem

    So I just tried it and still got it wrong. Here's what I did. a= 3.32/0.22= 49.5
  18. M

    One Dimensional Force Problem

    Oh okay. I had no idea I had to relate those equations. Is my mass that I have above correct?
  19. M

    Force and Motion Problem please help!

    Can someone please help me?
  20. M

    One Dimensional Force Problem

    1. The tension at which a fishing line snaps is commonly called the line's “strength.” What minimum strength is needed for a line that is to stop a salmon of weight 87 N in 11 cm if the fish is initially drifting horizontally at 3.3 m/s? Assume a constant deceleration. 2. F=ma, W=mg 3. I...
  21. M

    Force and Motion Problem please help!

    1. Tarzan, who weighs 790 N, swings from a cliff at the end of a 24.2 m vine that hangs from a high tree limb and initially makes an angle of 26.3° with the vertical. Assume that an x axis points horizontally away from the cliff edge and a y axis extends upward. Immediately after Tarzan steps...
  22. M

    Magnitude and Acceleration Problem

    So the only thing I did wrong was not negate that part?
  23. M

    Magnitude and Acceleration Problem

    The third angle is below the x axis.
  24. M

    Magnitude and Acceleration Problem

    1. Three astronauts, propelled by jet backpacks, push and guide a 148 kg asteroid toward a processing dock, exerting the forces shown in the figure, with F1 = 29 N, F2 = 54 N, F3 = 40 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative to the positive direction...
  25. M

    Relative Motion of cheetah Problem

    Okay thank you I got the right answer
  26. M

    Relative Motion of cheetah Problem

    1. A cameraman on a pickup truck is traveling westward at 19 km/h while he videotapes a cheetah that is moving westward 38 km/h faster than the truck. Suddenly, the cheetah stops, turns, and then run at 50 km/h eastward, as measured by a suddenly nervous crew member who stands alongside the...
  27. M

    Uniform Circular Motion Problem

    OKay thank you I got the right answer
  28. M

    Uniform Circular Motion Problem

    Oh okay but I'm still confused on g. Would I multiply 0.05X9.81 to get the correct acceleration?
  29. M

    Uniform Circular Motion Problem

    Well I really was confused about g. I couldn't find out a conversion factor for it anywhere. I don't know how to use it.
  30. M

    Uniform Circular Motion Problem

    1. The fast French train known as the TGV (Train à Grande Vitesse) has a scheduled average speed of 216 km/h. (a) If the train goes around a curve at that speed and the magnitude of the acceleration experienced by the passengers is to be limited to 0.050g, what is the smallest radius of...
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