Question

A 10 m high rocket containing liquid ful of specific gravity 1.2 lifts off at an acceleration of 5 g . The pressure ob the bottom plate of the rocket at luft off is

Answer 1

i think its ans is 1.2×10×6g=72g

here g=10m/s^2 so ans is 720 N/m

Answer 2

Answer:

7.2 kg/cm^2

Explanation:

the height of fuel column (h) = 10 m

pressure at bottom p = ९fuel ( a+g )h

a is upward acceleration

rho fuel = sp. gravity * rho w

= 1.2 * 1000

= 1200 kg/m^3

p= 1200 * (5g+g)*10

= 1200 * 6 * 10 * 100

=7.2 * 10^5 N/m^2

= 7.2 kg/cm^2