Question
You can keep a 3 kg book from dropping by pushing it horizontally against a wall. What force must you apply to the book to keep it from falling? What is the coefficient of static friction?
Answers
Elena
x: F= N
y: mg=F(fr)
mg=F(fr) =μ•N= μ•F
F=mg/ μ
y: mg=F(fr)
mg=F(fr) =μ•N= μ•F
F=mg/ μ