A cannon of 1000 kg, shoot a projectile of 9 kg with a velocity of 500 m/s at 30 degrees above the horizontal. If the cannon is above a horizontal surface and is free to move, and is a rigid body, which is the velocity of the cannon after the shoot? Which is the normal applied to the floor? The shoot last 7 milliseconds.
Solution with FisicaLab
Erase the content of the chalkboard and select the SI system. And add the elements as show the image below:
To the element Stationary reference system write:
To the block:
To its normal force:
To the impulsive force produced to the shoot (the oblique force), write:
To the element Mobile, the projectile that we call Bala (projectile), write:
Now through the element Momentum we apply the impulsive force to the object Projectile:
Now click in the icon Solve to get the answer:
n = 331238.571 N ; a = -556.731 m/s2 ; vf = -3.897 m/s ; d = -0.014 m ; f = 642857.143 N ; imp = 4500.000 N*s ; ang = 30.000 degrees ; Status = success.