Physics

posted by .

A 0.409 kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 19.5 N/m. The block rests on a frictionless surface. A 0.0500 kg wad of putty is thrown horizontally at the block, hitting it with an initial speed of 2.32 m/s and sticking. How far does the putty-block system compress the spring?

My answer .366 is 10% off. Why/How?

  • Physics -

    How can I possibly know why your answer is off? I have no idea what you did.

  • Physics -

    I did m1v1 /(m1+m2) = vf = .252723

    x = vf(m/k)
    x = .366

  • Physics -

    after getting vf, you need to calculate the KE of the putty/block, and set that equal to the compressed energy in the spring 1/2 k x^2, and solve for x.


    I think you need a tutor, you appear to be totally lost.

  • Physics -

    x = v * sqrt(m/k)

    correct?

  • Physics -

    No.
    Set the KE of the putty/block, set it equal to the max stored energy of the spring, 1/2 k x^2

  • Physics -

    when I set 1/2mv2 equal to 1/2kx2

    I got .366

  • Physics -

    make sure you are converting your final answer to meters

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    The block in the figure below lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 65 N/m. Initially, the spring is at its relaxed length and the block is stationary at …
  2. Physics

    A 0.409 kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 19.5 N/m. The block rests on a frictionless surface. A 0.0500 kg wad of putty is thrown horizontally at the block, hitting …
  3. Physics

    A 0.400 kg block of wood hangs from the ceiling by a string, and a 0.0700 kg wad of putty is thrown straight upward, striking the bottom of the block with a speed of 6.40 m/s. The wad of putty sticks to the block. How high does the …
  4. Physics

    A 0.400 kg block of wood hangs from the ceiling by a string, and a 0.0700 kg wad of putty is thrown straight upward, striking the bottom of the block with a speed of 5.80 m/s. The wad of putty sticks to the block. Is the mechanical …
  5. Physics

    A 0.20-kg block rests on a frictionless level surface and is attached to a horizontally aligned spring with a spring constant of 40 N/m. The block is initially displaced 4.0 cm from the equilibrium point and then released to set up …
  6. physics

    A physics student pulls a block of mass m = 23 kg up an incline at a slow constant velocity for a distance of d = 4 m. The incline makes an angle q = 25° with the horizontal. The coefficient of kinetic friction between the block and …
  7. Physics

    A 15.0-kg block rests on a horizontal table and is attached to one end of a massless, horizontal spring. By pulling horizontally on the other end of the spring, someone causes the block to accelerate uniformly and reach a speed of …
  8. physics

    A 0.330-kg block of wood rests on a horizontal frictionless surface and is attached to a spring (also horizontal) with a 29.5-N/m force constant that is at its equilibrium length. A 0.0600-kg wad of Play-Doh is thrown horizontally …
  9. Physics

    A 15.0-kg block rests on a horizontal table and is attached to one end of a massless, horizontal spring. By pulling horizontally on the other end of the spring, someone causes the block to accelerate uniformly and reach a speed of …
  10. Physics

    A 0.490-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 25.0N/m . The block rests on a frictionless surface. A 6.00×10−2-kg wad of putty is thrown horizontally at the …

More Similar Questions