Navigate

A machine gun fires 10 bullets/s,each of mass 10 g,the speed of each bullet

A machine gun fires 10 bullets/s, each of mass 10g, the speed of each bullet is 20 cms⁻¹, then force of recoil is

Options

(a) 200 dyne
(b) 2000 dyne
(c) 20 dyne
(d) None of these

Correct Answer:

2000 dyne

Explanation:

Time taken for 1 bullet = 1/n
Force = the rate of change of momentum = mvn
= 10 x 20 x 10 = 2000 dyne

admin:

Related Questions

  1. A force of 10N is applied on a body for 3 sec and the corresponding displacement 6 m.
  2. If ∆U and ∆W represent the increase in internal energy and work done by the system
  3. A siren emitting sound of frequency 800 Hz is going away from a static listener
  4. Alternating current cannot be measured by D.C Ammeter because
  5. If h is the height of the capillary rise and r be the radius of capillary tube,