Question
Question: A 0.1 kg steel ball falls from a height of 10 m and bounces upto height 7m. If all the dissipated en...
A 0.1 kg steel ball falls from a height of 10 m and bounces upto height 7m. If all the dissipated energy was absorbed by the ball as heat, then its temperature rise would be :
[Given Ssteel = 0.11 kCal/kg0C]
A
0.0640C
B
0.0320C
C
0.1280C
D
None of these
Answer
0.0640C
Explanation
Solution
0.1 × 10 × (10 – 7) = 0.1 × 0.11× DT × 103 × 4.2
DT =4.2×1130×0.1= 0.0640C