The discussion revolves around calculating the thrust needed for a 300 kg rocket to achieve a thrust to weight ratio of 3:1. Participants explore the relationship between thrust and weight, as well as the implications of the thrust to weight ratio in the context of rocket physics.
The discussion is active, with participants providing insights into the thrust to weight ratio and engaging in calculations. Some have offered guidance on how to approach the problem, while others express uncertainty about the steps needed to find the thrust.
Participants note the weight of the rocket as calculated from its mass and the acceleration due to gravity. There is a focus on understanding ratios and the implications of achieving a specific thrust to weight ratio.
Kaura said:I do not have much experience with this sort of equation but I believe that the equation for thrust to weight ratio is T/W where T is the force of the thrust and W is the weight of the given body measured in Newtons hope this helps
j doe said:so based on your equation, would it be 3 / 2945.1 N? that would equal 0.00101864113. what would the units be?
how do i do that?Kaura said:I think you would have to find the force of thrust so that T/W would be equivalent to 3/1
Do you know what a ratio is?j doe said:how do i do that?
do i multiply 2945.1 by 3? I'm not quite sure how to find the thrust.SteamKing said:Do you know what a ratio is?
Here's an example:
The ratio of centimeters to meters is 100 to 1.
You are asked to find the thrust such that a thrust to weight ratio of 3 to 1 is obtained. You have already determined the weight of the rocket.
weight = mass × acceleration due to gravityj doe said:do i multiply 2945.1 by 3? I'm not quite sure how to find the thrust.
thrust = 2945.1 N x 3 = 8835.3 N?SteamKing said:weight = mass × acceleration due to gravity
You calculated the weight of the rocket in Post #1 (2945.1 N)
You want the thrust o this rocket to be 3 times its weight.
Therefore, the thrust = ?
j doe said:thrust = 2945.1 N x 3 = 8835.3 N?
That looks OK.j doe said:thrust = 2945.1 N x 3 = 8835.3 N?