*81. The principles used to solve this problem are similar to thosein Multiple-C
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*81. The principles used to solve this problem are similar to thosein Multiple-Concept Example 17. A 205-kg log is pulled up a ramp by meansof a rope that is parallel to the surface of the ramp. The ramp isinclined at 30.0° with respect to the horizontal. Thecoefficient of kinetic friction between the log and the ramp is0.900, and the log has an acceleration of 0.800 m/s2.Find the tension in the rope. The principles used to solve this problem are similar to thosein Multiple-Concept Example 17. A 205-kg log is pulled up a ramp by meansof a rope that is parallel to the surface of the ramp. The ramp isinclined at 30.0° with respect to the horizontal. Thecoefficient of kinetic friction between the log and the ramp is0.900, and the log has an acceleration of 0.800 m/s2.Find the tension in the rope. *81. The principles used to solve this problem are similar to thosein Multiple-Concept Example 17. A 205-kg log is pulled up a ramp by meansof a rope that is parallel to the surface of the ramp. The ramp isinclined at 30.0° with respect to the horizontal. Thecoefficient of kinetic friction between the log and the ramp is0.900, and the log has an acceleration of 0.800 m/s2.Find the tension in the rope.Explanation / Answer
Angle = 30 degrees
Coeffcien tof kinetic friction = 0.9
Acceleration a = 0.8 m / s ^ 2
Mass m = 205 kg
Frictional force f = [ mg cos 30 ]
= 1565.86 N
Net force F = T –f –mgsin 30
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