A small block with mass 0. 0400 kg slides in a vertical circle of radius r = 0. 500 m on the inside of a circular track. During one of the revolutions of the block, when the block is at the bottom of its path, point a, the normal force exerted on the block by the track has magnitude 3. 95 n. In this same revolution, when the block reaches the top of its path, point b, the normal force exerted on the block has magnitude 0. 680 n. How much work is done on the block by friction during the motion of the block from point a to point b?

No one will ever know..

Iwas in a argument about a certain class grade with my teacher. it was a ‘a-’when i felt that i deserved a ‘a’. i showed him (my teacher) why i felt i derserved so. i questioned what i got wrong and showed him what i learned. i look back to that teacher with nothing but love and support because that’s the class that i actually learned the most. the moral of the story is to see where the other person is coming from and what they have done. also, when in a conflict, never attack the persons character. this will just make the argument end poorly.

Iwould have to go with homosexual, his face gives it away