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AP EAMCET202315 May 2023Morning ShiftPhysicsThermal Properties of MatterActual

A block of steel of mass 2 ~kg slides down a rough inclined plane of inclination of ⁻¹ ( 3 5 ) at a constant speed. The temperature of the block as it slides through 80 ~cm , assuming that the mechanical energy lost is used to increase the temperature of the block is nearly (Specific heat capacity of steel =420 Jkg ⁻¹ ~K ⁻¹ and Acceleration due to gravity =10 ~ms ⁻² )

Options

  1. A0.0190^ C
  2. B0.0114^ C
  3. C0.0152^ C
  4. D0.0952^ C

Correct answer

C. 0.0152^ C

Step-by-step solution

Work done due to sliding down the block = heat gain by block of steel aligned & T = g ( s ) C = 10 4 5 80 100 420 & = 10 4 80 5 100 420 = 16 5 210 =0.0152^ C aligned

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