Question

if P = 20 N and w = 40 N, then of coefficient of friction is​

Answer 1

Answer:

0.25

Step-by-step explanation:

We know

We know:

frictional force =μ x normal force

Now,

The book is pressed by two 40 N force acting normal, and the book tends to slide down,

Thus, frictional force =2×μN

∴2×40μ=20⇒μ=0.25

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