Un alambre de acero templado de 2.5 mm de diametro soporta en su extremo inferior un peso de 220 n. si el limite elastico del acero es de 5x10 pa, calcula:
a) el esfuerzo de tension que soporta

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.

While carrying a heavy box up the stairs,you set the box on a step and rest. then you pick up the box and carry it to the top of the stairs. describe these actions in terms of balanced and unbalanced forces acting on the box.