Grade 11General Physics

a mass of 4 kg rests on a horizontal plane the plane. the gradually inclined until at an angle 15 with the horizontal, the mass just bugins to slide. what is the cofficient of static friction between the block and the surface?

vinay desai

15 Years agoGrade 11

3 Answers

gOlU g3n|[0]uS

15 Years ago

M = 4 kg

x= theta = 15

Mgsinx = μMgcosx

then find μ = ? if u find worng ans then tell me

Gokul Joshi AskiitiansExpert-IITK

15 Years ago

Dear Vinay,

This is called angle of repose.
http://www.askiitians.com/iit-jee-physics/mechanics/friction-page4.aspx
http://www.askiitians.com/iit-jee-physics/mechanics/friction-page5.aspx

So coefficient of static friction = m_s = tan(α) = tan(15°)

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Himani

9 Years ago

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