a rocket of mass 1000 kg is to be projected vertically upwards the gases are exhausted vertically downwards with velocity `100ms^-1` with respect to the rocket what is the min rate of burning of fuel so as to just lift the rocket upwards against the gravitational attraction?(Take g=`10ms^-2`)

Options

A. `50kgs^-1`
B. `100kgs^-1`
C. `200kgs^-1`
D. `400kgs^-1`

Answer

B