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The initial mass of a rocket is 1000kg. Calculate at what rate the fuel should be burnt so that the rocket is given an acceleration of 20ms-2. The gases come out at a relative speed of 500ms-1 with respect to the rocket: [Use g = 10m/s2]

Option 1 -

500 kg s-1

Option 2 -

10 kg s-1            

Option 3 -

6.0 * 102 kg s-1

Option 4 -

60 kg s-1

0 2 Views | Posted 2 months ago
Asked by Shiksha User

  • 1 Answer

  • V

    Answered by

    Vishal Baghel | Contributor-Level 10

    2 months ago
    Correct Option - 4


    Detailed Solution:

    V r e l d m d t − m g = F e x t

    =>500 d m d t − 1 0 0 0 × 1 0 = 1 0 0 0 × 2 0

    d m d t = 6 0 k g / s

                 

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