Two cannons of mass 100 kg are placed on a uniform disc of radius 4.0 m and mass 400 kg. one cannon is located at the edge of the disc and the other cannon is placed on the opposite side of the disc half way between the center of the disc and the edge. the two cannons fire simultaneously in the same direction (toward the left). the cannonballs each have a mass of 2.0 kg and are moving at 250 m/s.
a. what is the angular velocity of the disc after the cannons are fired? is it rotating clockwise or counterclockwise?
b. suppose we could stop the rotation of the disc by firing a third cannonball. which cannon must fire and how fast must the cannonball be moving?
Answers: 2
Other questions on the subject: Physics
Physics, 22.06.2019 04:30, AShevel6767
In a system, when potential energy decreases, then entropy also decreases. true false
Answers: 3
Physics, 22.06.2019 10:00, lorelei7668
(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present
Answers: 3
Do you know the correct answer?
Two cannons of mass 100 kg are placed on a uniform disc of radius 4.0 m and mass 400 kg. one cannon...
Questions in other subjects:
Computers and Technology, 14.10.2019 02:00
Physics, 14.10.2019 02:00
Mathematics, 14.10.2019 02:00
Mathematics, 14.10.2019 02:00
English, 14.10.2019 02:00
Physics, 14.10.2019 02:00
Biology, 14.10.2019 02:00
