Two identical masses hang at rest over a massless, frictionless pulley as seen in the image. What is the correct expression for the frictional force exerted on mass 1 by the table in order to keep the masses at rest?
A. m1g
B. m2g
C. g(m2 + m1)
D. g(m2 - m1)
Answer:D
Two identical masses hang at rest over a massless, frictionless pulley as seen in the image. What is the correct expression for the frictional force exerted on mass 1 by the table in order to keep the masses at rest?
A. m1g B. m2g C. g(m2 + m1) D. g(m2 - m1)