From what height must a piece of lead be dropped if the heat generated on impact with the ground is just sufficient to melt it. Assume that all the heat is confined to lead. The initial temperature of lead is 27^(@)C and its final temperature is 327^(@)C. Specific heat capacity of lead 0.125 xx 10 ^(3) J//Kg//K. Latent heat of fusion of lead =31 xx 10 ^(3) J //kg.

From what height must a piece of lead be dropped if the heat generated

1.	From what height must a piece of lead be dropped if the heat generated on impact with the ground is just sufficient to melt it. Assume that all the heat is confined to lead. The initial temperature of lead is 27^(@)C and its final temperature is 327^(@)C. Specific heat capacity of lead 0.125 xx 10 ^(3) J//Kg//K. Latent heat of fusion of lead =31 xx 10 ^(3) J //kg.
Answer» SOLUTION :`mcd T + ML = mgh, 0.125 XX 10 ^(3) xx 307 + 31 xx 10 ^(3) = 9.8 xx h , h = 7. 08 xx 10 ^(3) m`