contestada

A coin placed on the cover of a book just begins to move when the cover makes an angle of 38 degrees with the horizontal. What is the coefficient of static friction?

Respuesta :

Answer:

m g sin theta = force of object along incline due to gravity

N μ = frictional of incline on object where N is the normal force

N = m g cos theta     force perpendicular to incline

m g sin theta = N μ = μ m g cos theta

μ  = tan theta = tan 38 = .78

Otras preguntas