A block, placed on a horizontal table, just starts moving when the applied horizontal force is 5 N. What can we say about the magnitude of friction acting on the block once it starts moving? *
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N=W+Fsinθ
∴f
max
=μN=(tanϕ)(W+Fsinθ) follow the given picture
To move the body;
Fcosθ=f
max
=(tanϕ)(W+Fsinθ)
Solving this equation we get,
f=
cos(θ+ϕ)
Wsinϕ
∴f
max
=μN=(tanϕ)(W+Fsinθ) follow the given picture
To move the body;
Fcosθ=f
max
=(tanϕ)(W+Fsinθ)
Solving this equation we get,
f=
cos(θ+ϕ)
Wsinϕ
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