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Question
Calculate the coefficient of static friction for an object of mass 50 kg placed on horizontal table pulled by attaching a spring balance. The force is increased gradually it is observed that the object just moves when spring balance shows 50 N.
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Solution
Given: m = 50 kg, FL = 50 N, g = 9.8 m/s2
To find: Coefficient of static friction (μS)
Formula: `mu_"S" = "F"_"L"/"N" = "F"_"L"/"mg"`
Calculation: From formula,
`mu_"S" = 50/(50 xx 9.8) = 0.102`
The coefficient of static friction is 0.102.
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