42. A block has a little block hanging out to its side, as shown: As you know, if the situation is left like this, the little block will just fall. But if we accelerate the leftmost block to the right, this will create a normal force between the little block and the big block, and if there is a coefficient of friction between them, then the little block won’t slide down. a. The mass of the little block is 0.15 kg. What frictional force is required to keep it from falling? (State a magnitude and direction.) b. If both blocks are accelerating to the right with an acceleration a = 14.0 m/s2 , what is the normal force on the little block provided by the big block? c. What is the minimum coefficient of static friction required?
I dont understand B and C, yo can find the question at this website.http://scipp.ucsc.edu/outreach/05NewtonsLaws.pdf and the answer at this website. I need the steps since I dont understand the answer http://scipp.ucsc.edu/outreach/A-AnswerstoSelectedProblems.pdf
