A 1.90 kgkg textbook rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter is 0.170 mm, to a hanging book with mass 3.10 kgkg. The system is released from rest, and the books are observed to move 1.10 mm in 0.900 ss. a) What is the tension in the part of the cord attached to the textbook? Express your answer with the appropriate units. b) What is the tension in the part of the cord attached to the hanging book? Express your answer with the appropriate units. c) What is the moment of inertia of the pulley about its rotation axis? Express your answer with the appropriate units.

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.