dav science

a machine gun fires 25 g bullets at the rate of 600 bullets per minute with a speed of 200 m/s. calculate the force required to keep the gun in position.

  1. 👍
  2. 👎
  3. 👁
  1. U= 0
    V= 200m/s
    T= 60s/600bullets = 1/10sec
    M= 25g = .025 kg
    Acceleration = ?
    So , a = v-u/t = 200-0/1/10 = 2000 m/s^2
    Force = ma = 0.025*2000 = 50 N

    1. 👍
    2. 👎
  2. U= 0
    V= 200m/s
    T= 60s/600bullets = 1/10sec
    M= 25g = .025 kg
    Acceleration = ?
    So , a = v-u/t = 200-0/1/10 = 2000 m/s^2
    Force = ma = 0.025*2000 = 50 N

    1. 👍
    2. 👎
  3. How can 200-0/1/10 be 2000......
    Think...it will be 20..

    1. 👍
    2. 👎
  4. 200/1/10=200*10/1[reciprocal]. That's why 200/1/10=2000m/s^2

    1. 👍
    2. 👎
  5. But in question,they ask what is the amount of force required to keep gun in same position so,by 1st law of Newton,the force will must be 0N.

    1. 👍
    2. 👎
  6. How t=60s/600bullets

    1. 👍
    2. 👎
  7. How t=1/10

    1. 👍
    2. 👎
  8. F = m.n.v
    M = 25g =0.025kg
    N = 600 bullets / 60 sec
    = 10 bullet/ s
    F = 0.025 Γ— 10 Γ— 200
    = 50 N

    1. 👍
    2. 👎
  9. As we know force equals to mass.acc
    So we can write m.v-u/t
    But here where is time in the formula of force

    1. 👍
    2. 👎
  10. I don't know πŸ˜…πŸ˜…πŸ˜…

    1. 👍
    2. 👎
  11. 50 NEWTON is the answer....πŸ‘

    1. 👍
    2. 👎
  12. 50 N

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    It is well known that bullets and other missiles fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with 8 g bullets at the rate of 110 bullets/min, the speed of each bullet being 550

  2. Physics

    A baseball player uses a pitching machine to help him improve his batting average. He places the 43.4 kg machine on a frozen pond. The machine fires a 0.0546 kg baseball horizontally at a speed of 44.8 m/s. What is the magnitude

  3. physics

    Engineers are developing new types of guns that might someday be used to launch satellites as if they were bullets. One such gun can give a small object a velocity of 2.5 km/s while moving it through a distance of only 1.7 cm. (a)

  4. Physics

    In a friendly neighborhood squirt gun contest a participant runs at 7.8 m/s horizontally off the back deck and fires her squirt gun in the plane of her motion but 45' above horizontal. The gun can shoot water at 11 m/s relative to

  1. Physics

    A bullet is dropped into a river from a very high bridge. At the same time, another bullet is fired from a gun straight down towards the water. If air resistance is negligible, the acceleration of the bullets just before they

  2. physics

    a gun fires a 3g bullet with a speed of 400m/s. the gun barrel is 20cm long. how much energy is given to the bullet?

  3. Physics

    Two speeding lead bullets each of mass 5 g and temperature of 20Β°C collide head on at speeds of 500m/s each. Assuming a perfectly inelastic collision and no loss of energy to the atmospheres, describe the final state of the two

  4. physics

    Hello everyone, I need help with this question: A dart gun is fired while being held horizontally at a height of 1.00m above ground level and while it is at rest relative to the ground. The dart from the gun travels a horizontal

  1. Chemistry

    A 0.22-caliber handgun fires a 27-g bullet at a velocity of 765 m/s. Calculate the de Broglie wavelength of the bullet. Is the wave nature of matter significant for bullets?

  2. Physics

    A bullet is dropped into a river from a very high bridge. At the same time, another bullet is fired from a gun straight down towards the water. If air resistance is negligible, how do the accelerations of the bullets compare just

  3. Physics

    Engineers are developing new types of guns that might someday be used to launch satellites as if they were bullets. One such gun can give a small object a velocity of 2.7 km/s, moving it through only 1.5 cm. (a) What acceleration

  4. Physics

    Please help me learn how to do this problem, step by step please. Engineers are developing new types of guns that might someday be used to launch satellites as if they were bullets. One such gun can give a small object a velocity

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