A bob of mass 2.0 kg is attached to the end of a string to make a pendulum. The bob is pulled to one side through an angle of 58 degrees, then it is released. The tension in the string when the ball is at the bottom of the string is ? A- 38N B- 26 N C- 20N D- 18N E- 1.2 N

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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.