Physics

A hammer of mass M is moving at speed v0 when it strikes a nail of negligible mass that is stuck in a wooden block. The hammer is observed to drive the nail a distance L deeper into the block.

A) Find the magnitude F of the force that the wooden block exerts on the nail, assuming that this force is independent of the depth of penetration of the nail into the wood. You may also assume that v0 >√2gL, so that the change in the hammer's gravitational potential energy, as it drives the nail into the block, is insignificant. Express the magnitude of the force in terms of M, v0, and L?
B) Now evaluate the magnitude of the holding force of the wooden block on the nail by assuming that the force necessary to pull the nail out is the same as that needed to drive it in, which we just derived. Assume a relatively heavy M=0.5kg hammer (about 18 ounces), moving with speed v0=10m/s. (If such a hammer were swung this hard upward and released, it would rise 5 m). Take the penetration depth L to be 2 cm, which is appropriate for one hit on a relatively heavy construction nail. Express your answer to the nearest pound. (Note: 1lb=4.45N.)

  1. 👍 0
  2. 👎 0
  3. 👁 310
  1. I need the answer too

    1. 👍 0
    2. 👎 0
    posted by duhh
  2. doiii i need da answer too doi

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A hammer weighing of 1 kg moving with the speed of 10 m/s strikes the head of the nail driving it 10 cm into wall. Neglecting the mass of the nail, calculate the impluse.

    asked by Anonymous on June 26, 2017
  2. physics

    When a hammer strikes a nail, it is compressed along its length. Suppose that a steel nail 10.00 cm long and 3.00 mm in diameter is compressed an average of 65.0 µm by a 0.460 kg hammer during a 1.20 ms collision. (a) What

    asked by mathew on October 1, 2014
  3. Physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 13 g nail when it is struck by a 550 g hammer moving with an initial speed of 4.0 m/s. I solved for

    asked by Kelly on April 27, 2010
  4. Physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 13 g nail when it is struck by a 550 g hammer moving with an initial speed of 4.0 m/s. I solved for

    asked by Kelly on April 27, 2010
  5. physics

    A hammer weighing of 1 kg moving with the speed of 10 m/s strikes the head of the nail driving it 10 cm into wall. Neglecting the mass of the nail, calculate: 1) The acceleration during the impact 2) The time interval during the

    asked by Anonymous on June 25, 2017
  6. physics

    A hammer head of mass 600g produces a force of 360N when it strikes the head of a nail. Explain how it is possible for a hammer to drive the nail into a piece of wood, yet a weight of 360N resting on the head of the nail would not

    asked by The Okome on April 21, 2019
  7. physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 10-g nail when it is struck by a 550-g hammer moving with an initial speed of 3.8 m/s.

    asked by stoic-rider77 on November 2, 2012
  8. Physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 15 g nail when it is struck by a 550 g hammer moving with an initial speed of 5.1 m/s.

    asked by Ryan on March 3, 2010
  9. Physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 15 g nail when it is struck by a 550 g hammer moving with an initial speed of 5.1 m/s.

    asked by Ryan on March 3, 2010
  10. physics

    The collision between a nail and hammer can be considered to be approximately elastic. Calculate the kinetic energy acquired by a 12gm nail when it is struck by a 550 gm hammer moving with an initial speed of 4.5 m/sec.

    asked by pakilina on November 25, 2011

More Similar Questions