5.9 A rocket with a lift-off mass 20,000 kg is blasted upwards with an initial acceleration of 5.0 m s-2. Calculate the initial thrust (force) of the blast.

Ask & Answer Question

physics ncert solutions class 11th Physics Class 11th Laws of Motion

5.9 A rocket with a lift-off mass 20,000 kg is blasted upwards with an initial acceleration of 5.0 m s^-2. Calculate the initial thrust (force) of the blast.

14 Views | Posted 4 months ago

Asked by Shiksha User

1 Answer

Answered by

Vishal Baghel | Contributor-Level 10

4 months ago

The mass of the rocket, m = 20000 kg

When the rocket is fired, gravitational acceleration tries to pull it down. Hence the effective acceleration on the rocket = rocket acceleration + gravitational acceleration

The acceleration, a = 5 m/s², gravitational acceleration =10 m/s²

Total acceleration = 5 +10 = 15 m/s²

Thrust force = 20000 $*$ 15 N = 3 .0 $*$ $10^{5}$ N

0 Upvotes 0 Downvotes

Similar Questions for you

A block rests on an inclined plane making an angle of 30° with the horizontal. The coefficient of static friction between block and the plane is 0.8. If the frictional force on the block is 10 N, then mass of block (in kg) (Take g = 10 m/s² )

alok kumar singh

Bullets of 0.03 kg mass each hit a plate at a rate of 200 bullets per second with velocity of 50 m/s and reflect back with velocity of 30 m/s. The average force acting on the plate in newton is

alok kumar singh