a rocket of mass of 450000kg is in flight. its thrust is directed at angle of 62.5 degree above horizantal n has magnitude of 6000000 N. find the magnitude and direction of rockets acceleration. give direction as an angle above horizontal
To find the magnitude and direction of the rocket's acceleration, we need to use Newton's second law of motion, πΉ = ππ, where πΉ is the net force applied on the rocket, π is its mass, and π is its acceleration.
First, we need to resolve the thrust force into its horizontal and vertical components. The horizontal component of the thrust force can be found using πΉβ = πΉ Γ cos(π), where π is the angle above the horizontal.
πΉβ = 6000000 N Γ cos(62.5Β°)
= 6000000 N Γ 0.456 (rounded to three decimal places)
β 2736000 N
The vertical component of the thrust force can be found using πΉπ£ = πΉ Γ sin(π).
πΉπ£ = 6000000 N Γ sin(62.5Β°)
= 6000000 N Γ 0.890 (rounded to three decimal places)
β 5340000 N
Now, we can find the net force acting on the rocket in each direction using Newton's second law.
In the horizontal direction, there is no other force acting on the rocket, so the net force is equal to the horizontal component of the thrust force:
πΉ_πππ‘_β = πΉβ
= 2736000 N
In the vertical direction, there is weight acting in the opposite direction. The weight of the rocket (π€) can be found using π€ = π Γ π, where π is the acceleration due to gravity.
π€ = 450000 kg Γ 9.8 m/sΒ²
β 4410000 N
Therefore, the net force in the vertical direction is:
πΉ_πππ‘_π£ = πΉπ£ - π€
= 5340000 N - 4410000 N
= 930000 N
Now, we can find the magnitude and direction of the rocket's acceleration using the net forces in each direction:
π = πΉ/π
In the horizontal direction: π_β = πΉ_πππ‘_β/π
= 2736000 N / 450000 kg
β 6.08 m/sΒ²
In the vertical direction: π_π£ = πΉ_πππ‘_π£/π
= 930000 N / 450000 kg
β 2.07 m/sΒ²
The magnitude of the rocket's acceleration is the vector sum of its horizontal and vertical components. Using the Pythagorean theorem, we can calculate:
|π| = β(π_βΒ² + π_π£Β²)
= β((6.08 m/sΒ²)Β² + (2.07 m/sΒ²)Β²)
β β(36.97 + 4.28)
β β41.25
β 6.42 m/sΒ² (rounded to two decimal places)
To find the direction of the rocket's acceleration as an angle above the horizontal (π), we can use the inverse tangent:
π = tanβ»ΒΉ(π_π£/π_β)
= tanβ»ΒΉ(2.07 m/sΒ² / 6.08 m/sΒ²)
β tanβ»ΒΉ(0.34)
β 19Β° (rounded to the nearest degree)
Therefore, the magnitude of the rocket's acceleration is approximately 6.42 m/sΒ², and its direction above the horizontal is approximately 19Β°.