Physics

A large rock weighing 164N is suspended from a 3 meter wire. The density of the rock is rho_rock = 3200 kg/m^3, and the wire mass is negligible. The upper end of the wire is fixed; in air the frequency is 40Hz while in liquid the frequency would be 25Hz. Find the density of the liquid.

-----

The rock has mass 16.7kg, and I know that v = lambda*f but I don't know what to do from here

asked by Roger

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A large rock that weighs 164.0 N is suspended from the lower end of a thin wire that is 3.00 m long. The density of the rock is 3200 kg/m^3. The mass of the wire is small enough that its effect on the tension in the wire can be
  2. Physics

    A large rock that weighs 164.0 N is suspended from the lower end of a thin wire that is 3.00 m long. The density of the rock is 3200 kg/m3. The mass of the wire is small enough that its effect on the tension in the wire can be
  3. physics

    A horizontal wire carries a large current. A second wire carrying a current in the same direction is suspended below it.Can the current in the upper wire hold the lower wire in suspension against gravity?
  4. physics

    A horizontal wire carries a large current. A second wire carrying a current in the same direction is suspended below it.Can the current in the upper wire hold the lower wire in suspension against gravity?
  5. vectors

    A steel wire 40 m long is suspended between two fixed points 20 m apart. A force of 375 N pulls the wire down at a point 15 m from one end of the wire. State the tension in each part of the wire. Texbook answer: 375N, 0N
  6. physics help 4

    An astronaut on a small planet wishes to measure the local value of g by timing pulses traveling down a wire which has a large mass suspended from it. Assume that the wire has a mass of 4.10 g and a length of 1.60 m and that a
  7. physics

    A box is suspended by a steel wire via a frictionless pulley The wire has a mass per length of µ = 24.5 × 10 − 3 kg/m. The box is so heavy and the wire so thin that the mass of the wire does not influence the wire tension.
  8. physics

    Consider two copper wires with the same cross-sectional area. Wire A is twice as long as wire B. How do the resistivities and resistances of the two wires compare? CHECK ALL THAT APPLY Wire A and wire B have the same resistance.
  9. College Physics

    One end of a 14 m long wire having a total mass of .8000 kg is fastened to a fixed support in the ceiling, and a 7.50 kg object is hung from the other end. If the wire is struck a transverse blow at one end, how much time does the
  10. Physics

    A horizontal wire is held taut by a mass M hanging from its end over a pulley. A harmonic wave of wavelength is produced on the wire by a 52 Hertz vibration. If the mass of the density of the wire is 8.0 x 10^-3 kg/m, what is M?

More Similar Questions