Physics

Two children pull a third child on a snow saucer sled exerting forces
F1 and F2 as shown from above in Figure 4.36. Find the acceleration
of the 49.00-kg sled and child system. Note that the direction of the
frictional force is unspecified; it will be in the opposite direction of the sum
of F1=10N and F2=8 N
F1 have an angle 45 degree with horizontal line and F2 has an angle 30 degree below the horizontal line at fourth quadrant
also there is another force directed to the left on x axises = 7.5 N

  1. 👍 0
  2. 👎 0
  3. 👁 2,614
  1. F = 10N[45o] + 8N[330o] -7.5N

    X = 10*cos45 + 8*cos330 - 7.5 = 6.50 N.
    Y = 10*sin45 + 8*sin330 = 3.07 N.

    Tan A = Y/X = 3.07/6.50 = 0.47247
    A = 25.29o

    Fr = X/cosA = 6.50/cos25.29=7.19N[25.29]
    = Resultant force.

    a = Fr/m = 7.19[25.29o]/49=0.147[25.29]

    1. 👍 0
    2. 👎 5

Respond to this Question

First Name

Your Response

Similar Questions

  1. AP physics

    A child on a sled reaches the bottom of a hill with a velocity of 10.0m/s and travels 25.0m along a horizontal straightaway to a stop. If the child and sled together have a mass of 60kg, what is the average retarding force on the

  2. physics

    It's a snowy day and you're pulling a friend along a level road on a sled. You've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. You've been walking at a steady

  3. physics

    Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 95.0 kg, down a θ = 50.0° slope at constant speed. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by

  4. physics

    A 17-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 29 N. Starting from rest, the sled attains a speed of 2.1 m/s in 9.6 m. Find the coefficient of kinetic friction between the runners of

  1. Physics

    A child holds a sled on a frictionless, snow- covered hill, inclined at an angle of 33◦. If the sled weighs 56 N, find the force ex- erted on the rope by the child. Answer in units of N.

  2. physics

    Josh starts his sled at the top of a 2.0 m-high hill that has a constant slope of 25 degrees . After reaching the bottom, he slides across a horizontal patch of snow. The hill is frictionless, but the coefficient of kinetic

  3. physics

    A sled is pulled at a constant velocity across a horizontal snow surface. If a force of 100 N is applied to the sled at an angle of 40 degrees to the ground, what is the force of friction between the sled and the snow?

  4. Grade 12 physics

    At the beach, 3 children pull on a floating toy. Child 1 plus with a force of 15N [N 24°E], child 2 pulls south and child 3 pulls west. The net force of the toy is zero. Assume that there are no other significant forces acting on

  1. Physics

    You pull a sled across a horizontal frictionless patch of snow. If your pulling force is in the same direction as the sled's displacement and increases the kinetic energy of the sled by 34%, by what percentage would the sled's

  2. physics

    A sled (mass 310 kg) is pulled across a stone floor with a coefficient of kinetic friction of 0.9. The rope that is used to pull it is at an angle alpha of 55 degrees with the horizontal. How hard (i.e., with what magnitude force)

  3. Physics

    A sled is pulled across a horizontal snow surface with a constant velocity. The force being applied is 80 N at an angle of 53 degrees to the ground. What is the magnitude of the force of friction of the snow acting on the sled?

  4. Physics

    Six dogs pull a two-person sled with a total mass of 280 kg. The coefficient of kinetic friction between the sled and the snow is 0.080. The sled accelerates at 0.65 m/s2 until it reaches a cruising speed of 15 km/h. What is the

You can view more similar questions or ask a new question.