Question

What does the image given above shows? What is the effect of this?pls tell correct answer ..it is a Q from friction chapter​

Answer 1

Answer:

It shows that the base of Object B has a Grip with Surface A. So that why we have to exert a much greater force to start it moving whereas when it start moving it will be easy to move it as the contact of Object B has reduced from Surface A

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Answer 2

Answer:

this figure shows that all bodies have some roughness so when it moves on another body there will interlocking and after some time it stops