1. A gun fires a shell of mass 8 kg in a horizontal direction with a...
1. A gun fires a shell of mass 8 kg in a horizontal direction with a velocity of 375 m-s. The mass of the gun is 2 t and the shell takes 0.012 s to leave the barrel. Calculate the velocity of recoil and the average force on the gun.
2. Two men, one of mass 80 kg and the other 60 kg, sit facing each other in two light boats and holding the ends of a rope between them. If they pull with a force of 50 N for 4 s, calculate the velocity acquired by each boat. Neglect water resistance and the mass of the boats.
Homework Answers
![Fore= 250 kN] b go by 60 kg 40N 4ON time = 4 oeu for Force x stime body Net change in momentiem final momentum Initial moment](http://img.homeworklib.com/questions/43493870-79ed-11eb-b8e0-c99dee2bb211.png?x-oss-process=image/resize,w_560)
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1. A gun fires a shell of mass 8 kg in a horizontal direction
with a...
1. Consider a gun of mass M (when unloaded) that fires a shell of mass m...
1. Consider a gun of mass M (when unloaded) that fires a shell of mass m with muzzle speed v. (That is, the shell's speed relative to the gun is v.) Assuming that the gun is completely free to recoil (no external forces on gun or shell), use conservation of momentum to show that the shell's speed relative to the ground is v/(1+m/M)
A Styer AMR (Anti-Materiel Rifle) with a mass of 18 kg fires a fires a 20...
A Styer AMR (Anti-Materiel Rifle) with a mass of 18 kg fires a fires a 20 gram bullet to have a muzzle velocity of 1450 m/s. The average time it takes to reach that muzzle velocity is 0.004 seconds. Since you are holding the gun to keep it horizontal and pushing back on the recoil to keep the AMR stationary.. a) Draw an appropriate momentum diagram for this process... b) And determine the average force you apply to the Styer...
A battleship that is 5.85 times 10^7 kg and originally at rest fires a 1100-kg artillery...
A battleship that is 5.85 times 10^7 kg and originally at rest fires a 1100-kg artillery shell horizontally with a velocity of 595 m/s. (a) If the shell is fired straight aft (toward the rear of the ship), there will be negligible friction opposing the ship's recoil. Calculate the recoil velocity of the ship, taking the firing direction to be the positive direction. (b) Calculate the change kinetic energy for the ship and the shell. This energy is less than...
8. A 1200 canon fires a 100 kg shell at 35 m/s in +ve x -...
8. A 1200 canon fires a 100 kg shell at 35 m/s in +ve x - direction. What is the recoil velocity of the canon? A) - 2 .9 m/s B) 3 5 m/s C) - 3.5 m/s D) 4 m/s
4. (25 pts) A spherical shell of mass 2.00 kg rolls without slipping down a Find...
4. (25 pts) A spherical shell of mass 2.00 kg rolls without slipping down a Find the acceleration, the friction force, and the minimum coefficient of friction to prevent slipping? 38.0° slope needed 3. (25 pts) Thre 12.5 m/s at 35.00 e boats are moving on a lake. The first boat (m - 2570 kg) is moving at south of west. The second boat (m- 1560 kg) is moving at 9.65 m/s at 30 west of north. The third boat...
A modern 5-inch 62-calibre naval gun can fire a 32 kg shell at a muzzle velocity...
A modern 5-inch 62-calibre naval gun can fire a 32 kg shell at a muzzle velocity of 800 m/s to a range of 37 km at 20 rounds/min. Suppose such a gun fires a projectile eastward at a nearly horizontal trajectory to a target 12 km away. The ship is at 60° geographic latitude. Find the deflection of the projectile due to the Coriolis force in both the northern and southern hemispheres (ignore air resistance).
A cannon of mass 5.60 ✕ 10^3 kg is rigidly bolted to the earth so it...
A cannon of mass 5.60 ✕ 10^3 kg is rigidly bolted to the earth so it can recoil only by a negligible amount. The cannon fires an 82.5-kg shell horizontally with an initial velocity of +550 m/s. Suppose the cannon is then unbolted from the earth, and no external force hinders its recoil. What would be the velocity of an identical shell fired by this loose cannon? (Hint: In both cases assume that the burning gunpowder imparts the same kinetic...
A 26.0-kg shell is fired from a gun with a muzzle velocity 170.0 m/s at 68.0o...
A 26.0-kg shell is fired from a gun with a muzzle velocity 170.0 m/s at 68.0o above the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass. One fragment, whose speed immediately after the explosion is zero, falls vertically. What is the horizontal speed of the other fragment?
A cannon of mass 5.93 x 103 kg is rigidly bolted to the earth so it...
A cannon of mass 5.93 x 103 kg is rigidly bolted to the earth so it can recolil only by a negligible amount. The cannon fires a 80.7kg shell horizontally with an initial velocity of 508 m/s. Suppose the cannon is then unbolted from the earth, and no external force hinders its recoil. What would be the velocity of a shell fired from this loose cannon? (Hint: In both cases assume that the burning gunpowder imparts the same kinetic energy...
A block of mass m = 20 kg sits on a fixed ramp of angle 8...
A block of mass m = 20 kg sits on a fixed ramp of angle 8 = 60 deg, height h = 3 m, and coefficients of friction static js = 0.7 and dynamic Hd = 0.5. You stand off to the side and pull on the rope to move the block up the ramp. m Р 7. Find the force P required to pull the block up at a constant velocity. 8. Find the work required to move the...
1. Consider a gun of mass M (when unloaded) that fires a shell of mass m with muzzle speed v. (That is, the shell's speed relative to the gun is v.) Assuming that the gun is completely free to recoil (no external forces on gun or shell), use conservation of momentum to show that the shell's speed relative to the ground is v/(1+m/M)
A Styer AMR (Anti-Materiel Rifle) with a mass of 18 kg fires a fires a 20 gram bullet to have a muzzle velocity of 1450 m/s. The average time it takes to reach that muzzle velocity is 0.004 seconds. Since you are holding the gun to keep it horizontal and pushing back on the recoil to keep the AMR stationary.. a) Draw an appropriate momentum diagram for this process... b) And determine the average force you apply to the Styer...
A battleship that is 5.85 times 10^7 kg and originally at rest fires a 1100-kg artillery shell horizontally with a velocity of 595 m/s. (a) If the shell is fired straight aft (toward the rear of the ship), there will be negligible friction opposing the ship's recoil. Calculate the recoil velocity of the ship, taking the firing direction to be the positive direction. (b) Calculate the change kinetic energy for the ship and the shell. This energy is less than...
4. (25 pts) A spherical shell of mass 2.00 kg rolls without slipping down a Find the acceleration, the friction force, and the minimum coefficient of friction to prevent slipping? 38.0° slope needed 3. (25 pts) Thre 12.5 m/s at 35.00 e boats are moving on a lake. The first boat (m - 2570 kg) is moving at south of west. The second boat (m- 1560 kg) is moving at 9.65 m/s at 30 west of north. The third boat...
A block of mass m = 20 kg sits on a fixed ramp of angle 8 = 60 deg, height h = 3 m, and coefficients of friction static js = 0.7 and dynamic Hd = 0.5. You stand off to the side and pull on the rope to move the block up the ramp. m Р 7. Find the force P required to pull the block up at a constant velocity. 8. Find the work required to move the...
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