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PROBLEM 5.12 A hanging mass, Mi = 3.5 kg, is attached by a light string that runs over a frictionless pulley to the front of a mass M2 = 1.50 kg that is initially at rest on the table. A third mass M3 = 2.50 kg, which is also initially at rest on the same table, is attached to the back of My by a light string. The coefficient of kinetic friction of all contact surfaces is 0.1. 13. Find the tension in the string connecting masses Mi and M2. a. 247.21 N c. 217.21 N b. 237.21 N d. 227.21 N 14. Find the tension in the string connecting masses M2 and M3. a. 50.82 N C. 40.82 N b. 60.82 N d. 30.82 N PROBLEM 5.13 15. A hanging mass, Mi = 0.5 kg, is attached by a light string that runs over a frictionless pulley to a mass M2 = 1.5 kg that is initially at rest on a frictionless ramp. The ramp is at an angle of 0 = 30.0 above the horizontal and the pulley is at the top of the ramp. Find the magnitude and direction of the acceleration of M1 a. 4.905 m/$2, upward c. 4.905 m/s2, upward b. 4.805 m/s2, downward d. 4.805 m/s2, downward PROBLEM 5.14 Arriving on a newly discovered planet, the captain of a spaceship performed the following experiment to calculate the gravitational acceleration for the planet: She placed masses of 100 g and 200 g on an Atwood device made of massless string and a frictionless pulley and measured that it took 1.5 seconds for each mass to travel 1 m from rest. PROBLEM 5.15 18. A crate slides down an inclined plane without friction. If it is released from rest and reaches a speed of 6 m/s after sliding a distance of 2.5 m, what is the angle of inclination of the plane with respect to the horizontal? a. 43.22 c. 45.22 b. 41.22" d. 47.22