Question

two identical masses of 5 kg each falls on a wheel from a height of 10m.The wheel disturbs a mass of 2kg water the rise in temperature of water will be

Answer 1

W = J Q

2m * g* h = J * m' * Cp * Delta T

2 *5*10*10 = 4.2 *(2* 1000* delta T)

Delta T = 0.12°c


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Answer 2

Answer:

0.12°C

Explanation:

m1=m2=5kg

Mgh=ms(delta T)

5*2*10*10=2*4200*Delta T

Delta T =1000/2*4200

Delta T=0.12°C