The problem can be solve using the formula
τ=r F sin(θ)
Where
τ is the torque,
r is the distance from where the pivot is to where the force
is,
F is the force exerted, and
θ is the angle between the force and radius
τ=(0.15m) (150N) sin(30) = 11.25 Nm
<span> </span>
The rocket should be fired for <u>129600 seconds.</u>
Why?
We can calculate for how long should the rocket be fired by using the following equation:
From the statement we know:
- Initial speed equal to zero.
- Force equal to 272N.
- Final speed (for the moment) equal to 62 m/s.
- Mass equal to 72000 Kg.
So, substituting and calculating, we have:
Hence, we have:
Variables: Time
Equations:
Answers: The rocket should be fired for 129600 seconds.
Have a nice day!