Post a New Question

physics

posted by .

1. How much acceleration does a 747 jumbo jet of mass 31600 kg experience in takeoff when the thrust for each of four engines is 30000 N?
2. Two boxes are seen to accelerate at the same rate when a force F is applied to the first and 5F is applied to second. What is the mass ratio of the boxes?

  • physics -

    1. F = 4 * 30000N = 120000N.

    F = ma = 120000,
    31600*a = 120000,
    a = 120000 / 31600 = 3.8 m/s^2.

    2. F = ma,
    m1 = F/a,

    m2 = 5F/a,

    m2/m1 = (5F/a) / (F/a) = 5F/a * a/F =
    5F/F = 5/1.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A jumbo jet must reach a speed of 360 km/h on the runway for takeoff. What is the least constant acceleration needed for takeoff from a 1.80 km runway?
  2. Physics

    A Pratt and whitney PW4000 turbofan engine is able to provide a maximum thrust of 2.49 x 100000 N.A Boeing 747-400 airliner has four of these engines. If its mass is 2.72 x 100000 kg, what is its acceleration?
  3. Physics

    A jet has 4 engines, each capable of providing 415N of thrust. The mass of the jet is 140,000 kg. What is the greatest acceleration that the jet can achieve?
  4. physics

    A jumbo jet needs to reach a speed of 369 km/hr on the runway for takeoff. Assuming a constant acceleration and a runway 1.6 km long, what minimum acceleration from rest is required?
  5. physics

    A jet fighter with mass 5000 kg accelerates from 360 km/hr in 10b s. Compute the minimum thrust required by the jet's engines.
  6. physics

    A 33 tonnes jet airline has 4 engines,each producing a nearly constant thrust of 165kN during the takeoff roll.Determine the length of the runway required if the takeoff speed is 320km/h.Neglect air and rolling resistance.
  7. Physical Science

    Suppose the jumbo jet of mass 30000 kg flies against an air resistance of 82000 N while the thrust of all four engines is 100000 N. Find the acceleration
  8. physics

    Hello everyone I'm working on this problem and I need some clarification. A 40 tonne jumbo jet accelerates down the runway at 5 m/s^2. What must be the thrust on each of its four engines?
  9. Physics

    A 40 tonne jumbo jet accelerates down the runway at 5 m/s^2. What must be the thrust on each of its four engines?
  10. physical sciences

    during the takeoff roll, a boeing 747 jumbo jet is accelarating at 4m\s. it requires 40 s to reach takeoff speed. what is the initial velocity of the jet?

More Similar Questions

Post a New Question