I Problems 1. A net force of 2.50 N acts on a 3.00-kg object. What is the accele
ID: 778835 • Letter: I
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I Problems 1. A net force of 2.50 N acts on a 3.00-kg object. What is the acceleration of the object? 2. An Atwood machine consists of a 0.820-kg mass and a 0.800-kg mass connected by a light string over a massless and frictionless pulley. What is the acceleration of the masses in the system 3. If a 1200-kg elevator is descending with an acceleration of 1.20m/s dowaward, wat is the terasion in the elevator cable? Practice problems The following data were taken with an Atwood machine whose total mass my + mo is kept constant For each of the values of mass difference (m2-mi ) shown in the table and the time for the system to move x-1.300 meters was measured (m my) ) 0.0100.020 onsn t (sec) a (m/s net force 0.030 0.040 0.050 8.30 5.06 3.97 3.37 2.98Explanation / Answer
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1.
acceleration of the object
a=F/m =2.5/3
a=0.8333 m/s2
2.
acceleration of atwood machine is given by
a=(m1-m2)g/(m1+m2) =(0.82-0.8)*9.81/(0.82+0.8)
a=0.1211 m/s2
3.
Tension in the elevator cable
T=m(g-a) =1200(9.81-1.2)
T=10332 N
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