A wooden block each is placed on a wooden table and a wooden ramp, as shown. The blocks are identical in all respects. Ten gram weights are added to the pans. The block placed on the ramp begins to move first. Which statement explains this observation

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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.