A rocket with a mass of 10 ^ 5 kg starts vertically upward from the surface with an acceleration of 15 m / s ^ 2

A rocket with a mass of 10 ^ 5 kg starts vertically upward from the surface with an acceleration of 15 m / s ^ 2 if the air resistance forces at launch are neglected, then the type of thrust of the rocket engines is equal to …

To calculate the required thrust of the engines of a given rocket, we apply Newton’s second law: m * a = Fthrust – Ft, whence Fthrust = m * a + Ft = m * a + m * g = m * (a + g).

Constants and variables: m – rocket mass (m = 10 ^ 5 kg); a – acceleration of the rocket (a = 15 m / s2); g – acceleration due to gravity (g ≈ 10 m / s2).

Let’s perform the calculation: Fthroat = m * (a + g) = 10 ^ 5 * (15 + 10) = 2.5 * 10 ^ 6 N (2.5 MN).

Answer: the thrust force of the engines of a given rocket is 2.5 * 10 ^ 6 N.