The 10-kg block B is supported by the 40-kg block A which is pulled up an incline by a constant 500 N force. Neglecting friction between the block and the incline and knowing that block B does not slip on block A, determine the smallest allowable value of the coefficient of static friction between the blocks.
![1029_coefficient of static friction between blocks.jpg](https://secure.tutorsglobe.com/CMSImages/1029_coefficient of static friction between blocks.jpg)