physics

A block of mass 4kg hangs from a spring of force constant 400N/m.the block is pulled down 15cm below the equilibrium position and released. Fimd: a) amplitude, frequency and period of vibration. b) kinetic energy when the block is 10 cm above the equilibrium position. c) time it takes the block to go 12 cm below the equilibrium pOsition on the way up to 9 cm above the equilibrium position

  1. 👍 0
  2. 👎 0
  3. 👁 353
  1. a) are not these standard formulas?
    b) You know total energy from the amplitude, and at 10 cm, you know from the force equation the PE, so then you know Ke
    c) use the displacement equation to figure time for each position, the difference in time is the time taken.

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics again it didnt work.

    A moving 1.60 kg block collides with a horizontal spring whose spring constant is 295 N/m. The block compresses the spring a maximum distance of 3.50 cm from its rest position. The coefficient of kinetic friction between the block

    asked by rory on March 1, 2008
  2. physics

    a 3.5 kg block is accelerated from rest by a compressed spring of spring constant 640 N/m. The block leaves the spring at the springs relaxation length.The block then travels over a horizontal floor with coefficient of kinetic

    asked by help on November 23, 2010
  3. Physics

    A moving 3.20 kg block collides with a horizontal spring whose spring constant is 224 N/m. The block compresses the spring a maximum distance of 5.50 cm from its rest position. The coefficient of kinetic friction between the block

    asked by Laura on January 1, 2014
  4. Physics

    Two blocks, each with a mass = 0.168 kg, can slide without friction on a horizontal surface. Initially, block 1 is in motion with a speed = 1.28 m/s; block 2 is at rest. When block 1 collides with block 2, a spring bumper on block

    asked by Lilly on March 5, 2012
  5. physics

    A block of ice of mass 4.10 kg is placed against a horizontal spring that has force constant k = 210 N/m and is compressed a distance 2.60×10−2 m. The spring is released and accelerates the block along a horizontal surface. You

    asked by ami on October 7, 2010
  1. Physics

    A 263-g block is dropped onto a vertical spring with force constant k = 2.52N/cm. The block sticks to the spring, and the spring compress 11.8 cm before coming momentarily to rest. while the spring is being compressed, how much

    asked by Kampamba Nsofu on May 24, 2017
  2. College Physics (repost)

    A 4.1 kg block is attached to a spring with a force constant of 550 N/m , as shown in the figure. Find the work done by the spring on the block as the block moves from A to B along paths 1 and 2. W=? How do your results depend on

    asked by Jenna on October 12, 2009
  3. Mechanics

    A 30.0-kg block is resting on a flat horizontal table. On top of this block is resting a 15.0-kg block, to which a horizontal spring is attached, as the drawing illustrates. The spring constant of the spring is 325 N/m. The

    asked by MLC on March 5, 2012
  4. phsyics

    an 8g bullet is shot into a 4kg block at rest on a frictionless horizontal surface. the bullet remains lodged in the block. the block movies into a spring and compresses it by 3cm. the force constant of the spring is 1500N/m. the

    asked by joyce on November 6, 2008
  5. Physics

    A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first

    asked by Brette on October 17, 2012
  6. 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

    asked by Elizabeth on November 30, 2012

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