The man shown below is pushing on a refrigerator that sits on a level floor. Ass

Question

The man shown below is pushing on a refrigerator that sits on a level floor. Assume the entire floor, including the portion under the man, is frictionless. The force exerted by the man has a magnitude of 108 N and the refrigerator has a mass of 196 kg. Use Newton's third law along with his second law to find the acceleration of the man. Assume he has a mass of 79 kg. (The force is pointing in the positive direction. Indicate the direction with the sign of your answer.) m/s2 A cannon is fired horizontally from a platform (see figure). The platform rests on a flat, icy, frictionless surface. Just after the shell is fired and while it is moving through the barrel of the gun, the shell (mass 2.8 kg) has an acceleration of +2575 m/s2. At the same time, the cannon has an acceleration of -0.84 m/s2. What is the mass of the cannon? kg

Explanation / Answer

79*a = 108

a= 108/79 = 1.367 m/s^2

2.8* 2575 = 0.84* m

m= 8583.33 kg

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