Question

6. A bricklayer drops a lump of mortar from a point 30 meters up the side of a brick building he is working on and it hits the ground with a splat. Mortar has a specific heat of 1200 J/(kg-K). By how many degrees will the mortar be warmer, assuming that all the energy it acquires dur- ing the drop is converted to internal energy inside the mortar and not the ground?

Help I think I’m supposed to use potential energy to ding the energy but there’s no mass

Answer 1

Potential energy will convert into internal energy of mortar. By applying conservation of energy: loss in P.E. = gain in I.E # mgh = ms increment T: (m get cancelled) 9.81 times 30 = 1200 (increment T) increment T = 0.245 degree C Answer rightdoublearrow raise in temperature will be 0.245 degree C

Rate it up. Thanks