A 6.0 kg mass hanging from a spring scale is slowly lowered onto a vertical spring. A) What does the spring scale read just before the mass touches the vertical spring? B) The spring scale reads 15 N when the bottom spring is compressed 2.0 cm. What is the spring constant of the bottom scale? C) Draw a free body diagram for the mass representing the previous situation.

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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.