All Neet 2020 aspirant ..✍️✍️✍️✍️ don't copy please. and spaming toh krna he mat. answer tbhi krna jub aata ho.
➡ Full explanation required.
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Answer:
option (2)
Explanation:
In case of vertical equilibrium
Ncosθ = mg + f(max) sinθ
=> mg = Ncosθ - f(max) sinθ ..........(1)
In case of Horizontal Equilibrium
Nsinθ + f(max)cosθ = mv²/R ........(2)
on dividing eq. 1 by 2
V²/Rg = (sinθ + μcosθ)/(cosθ - μsinθ)
=> V = √Rg(sinθ + μcosθ/ cosθ - μsinθ)
Divide Num. and Den. of RHS with cosθ
=> V = √Rg (μ + tan θ/ 1 - μtanθ)
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