An old spectrophotometer sits at rest on a lab table. Its mass is m = 25 kg. The coefficients of static and kinetic friction between the spectrophotometer and table are µs = 0.6 and µk = 0.5, respectively. In an effort to move the spectrophotometer, you exert a constant force |F~ |=150 N at an angle of 20◦ for 10 s in the direction shown below. 8-20 What is the normal component of the force on the spectrophotometer by the table as you are pushing? Will the spectrophotometer slide? What is the magnitude of the frictional force on the spectrophotometer by the table as you are pushing

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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.