A rocket with a mass of 1.2 x103 kg is scheduled to lift-off from a launch pad with an acceleration of 25 m/s2. What upward force must be externally applied to cause this acceleration?
can someone explain this one to me
2007-02-04 16:36:40 · 3 answers · asked by Dust T 1 in Science & Mathematics ➔ Physics
find the Fnet first
Fnet = ma
Fnet = (1.2x10^3kg)(25m/s^2)
Fnet = 30,000N
Fnet = Fapply - Fweigh
Fweigh = mg
Fweigh = (1.2x10^3kg)(9.8)
Fweigh = 11,760N
30,000 = Fapply - 11,760N
Fapply = 41,760N
2007-02-04 16:41:42 · answer #1 · answered by 7 · 0⤊ 0⤋
F = m a, where force is wanted, and both the mass and acceleration are given. To the specified acceleration must be added the acceleration due to gravity, as the rocket engine must overcome this as well as lifting the vehicle.
2007-02-04 16:41:58 · answer #2 · answered by Anonymous · 0⤊ 0⤋
the equation you need to use would be F=M x A where F is Force, M is Mass, and A is accelleration. your answer will be in Newtons. so that would be F = 1.2 x 10^3 (your mass) x 25 m/s (accelleration). the total force that is needed to move this rocket is 30 000 newtons of force.
2007-02-04 17:02:05 · answer #3 · answered by mcdonaldcj 6 · 0⤊ 0⤋