Question Related to Newton's Laws of Motion

[NeomiXD]

1. A fully loaded Saturn V rocket has a mass of 2.92 x 10^6 kg. Its engines have a thrust of 3.34 x 10^7 N.

a. What is the downward force of gravity on the rocket at blast-off?
b. What is the unbalanced force on the rocket at blast-off?
c. What is the acceleration of the rocket as it leaves the launching pad?


Given:

m = 2.92 x 10^6 kg
F= 3.34 x 10^7 N

Required:

a. F?
b. F?
c. a

Solution:

?

how do you solve this question? Or can someone explain it in more detail. Also, when it says "Its engines have a thrust of 3.34 x 10^7 N" does the value represent the force applied upward?

 

[berkeman]

1. A fully loaded Saturn V rocket has a mass of 2.92 x 10^6 kg. Its engines have a thrust of 3.34 x 10^7 N.

a. What is the downward force of gravity on the rocket at blast-off?
b. What is the unbalanced force on the rocket at blast-off?
c. What is the acceleration of the rocket as it leaves the launching pad?


Given:

m = 2.92 x 10^6 kg
F= 3.34 x 10^7 N

Required:

a. F?
b. F?
c. a

Solution:

?

how do you solve this question? Or can someone explain it in more detail. Also, when it says "Its engines have a thrust of 3.34 x 10^7 N" does the value represent the force applied upward?

Yes. That's the upward force. The downward force is just the weight due to gravity. What is the acceleration due to gravity g = _____ and how can you use that number with the mass of the rocket to get the force due to gravity?

 

[rock.freak667]

Also, when it says "Its engines have a thrust of 3.34 x 10^7 N" does the value represent the force applied upward?

Yes the thrust is the upward force. What is the downward force acting on the rocket? (This is what they are asking you in part a).