A block of mass m is kept over another block of mass M and the system rests on a horizontal surface

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A block of mass m is kept over another block of mass
M and the system rests on a horizontal surface
(figure 8-E1). A constant horizontal force F acting on the
lower block produces an acceleration F
2 (m + M)
in the
system, the two blocks always move together. (a) Find
the coefficient of kinetic friction between the bigger block
and the horizontal surface. (b) Find the frictional force
acting on the smaller block. (c) Find the work done by
the force of friction on the smaller block by the bigger
block during a displacement d of the system.
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your videos helping me a lot . lots of love from kota.

rohanm
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Sir please reply me how n is equal to (M+m)g

iabrarashraf
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shubam brother shouldnt we also consider the friction between the upper block and lower block when considering the fbd of the lower block. And write the eqns based on that, nevertheless we r getting the same ans

MohitRaja-uz
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Bahiya inhe separate seperate krke nhi kr sakte

namansharma
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Explanation of c part is totally wrong

universeencyclopedia
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Sir can you please write systematically 🙏🙏

aryabhatt