There is friction between the block and the table. The suspended 2 kg mass on th

Question

There is friction between the block and the table. The suspended 2 kg mass on the left is moving up, the 2 kg mass slides to the right on the table, and the suspended mass 4 kg on the right is moving down. The acceleration of gravity is 9.8 m/s^2.

What is the magnitude of the acceleration of the system? Answer in units of m/s^2

There is friction between the block and the table. The suspended 2 kg mass on the left is moving up, the 2 kg mass slides to the right on the table, and the suspended mass 4 kg on the right is moving down. The acceleration of gravity is 9.8 m/s^2. What is the magnitude of the acceleration of the system? Answer in units of m/s^2

Explanation / Answer

Total force in the direction of motion = 4*g

Total force against = 2*g + 0.18*2g = 2.36 g

Net force = 4g - 2.36g = 1.64g

Acceleration = 1.64g/(4+2+2) = 0.205 g = 2.009 m/s^2

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