Question

Ракета массой 105 кг стартует вертикально вверх c поверхности Земли c ускорением 15 м/c2. Если силами сопротивления воздуха при старте пренебречь, то чему будет равна сила тяги двигателей ракеты?

Answer 1

Ma=$F_{t}$-mg; $F_{t}$=ma+mg=m(a+g)=105*(15+10)=105*25=2625Н

Answer 2

Calculation of Thrust Force

To calculate the thrust force of the rocket, we need to use Newton's second law of motion, which states that the force acting on an object is equal to its mass multiplied by its acceleration. In this case, the rocket's mass is given as 105 kg, and the acceleration is 15 m/s^2.

Using the formula F = m * a, where F is the force, m is the mass, and a is the acceleration, we can calculate the thrust force of the rocket:

F = 105 kg * 15 m/s^2

F = 1575 N

Therefore, the thrust force of the rocket, neglecting air resistance, is 1575 Newtons.