00:01
Hello everyone, we are going to understand this question.
00:05
Here, given in the question, given, pate of rocket, w is equal to 800, sorry, 8 ,975 newton.
00:27
And force of propulsion, force of propulsion of rocket, let it is represented by fp, which is given 1 .2.
00:53
24 into 10 to the bar 5 newton and let the mass of rocket be m.
01:04
Let the mass of rocket be m.
01:13
Now we have to find the mass of the rocket.
01:20
Here given gravitational acceleration, we know that weight of the rocket is equal to weight of rocket is equal to m into g where g is the gravitational acceleration g is gravitational acceleration so we can write weight is given in the question that is 8 ,975 newton and value of m is unknown and value of gravitational acceleration that is 9 .8 meter per second square so here substituting the value 9 .8 now we can write m is equal to 8 ,975 upon 9 .8 kg now doing the further calculation so we get m is equal to for here we are taking value of g is 10 because here value are two lowers so here g will be 9 .8 is approximately equal to 10.
02:56
So after calculation we will get 897 .5 kg.
03:04
For reducing the calculation we can take 9 .8 is approximately equal to 10.
03:10
So i substituted the value of g as 10 meter per second square.
03:19
So mass of the rocket be 897 .5 kg.
03:24
Now solving for part b.
03:28
So let the acceleration of the rocket be a.
03:33
Let the acceleration of the rocket, acceleration of rocket, that is a.
03:50
Now propulsion force minus weight of the rocket will be, will provide the acceleration to the rocket.
04:02
So force of propulsion is 1 .24 into 10 to the power 5 minus weight of the rocket that is 8 ,975 and mass we have calculated 897 .5 into acceleration is a so we can write a is equal to 124, 12 ,0004 ,000 ,000, sorry, 12 ,000 ,000, 1400 minus for here it will be 1 ,24 ,000 minus 8 ,975 upon 897 .5.
04:58
Now doing the further calculation, so after doing the calculation we will get a is equal to a is equal to after doing the further calculation we will get 1150...