Questions
A block of ice of mass 50 kg is pushed out on a horizontal plane with a velocity of 5 m/s. Due to friction, it comes to rest after covering a distance of 25 m. How much ice melts?
detailed solution
Correct option is A
We havem=WJL=mv22JL=50×252×4.2×80=1.86gwhere L is the latent heat of ice (80 cal/g).Talk to our academic expert!
Similar Questions
A piece of ice falls from a height h, so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of h is (Take, latent heat of ice is 3.4 X 105 ]/kg and g = 10 N/kg)
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