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A copper cube of mass 200g slides down ...

A copper cube of mass `200g` slides down an a rough inclined plane of inclination `37^(@)` at a constant speed. Assume that any loss in mechanical energy goes into the copper block as thermal energy .Find the increase in the temperature of the block as it slides down through `60cm`. Specific heat capacity of copper `= 420J kg^(-1) K^(-1)`

Text Solution

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The correct Answer is:
`8.6xx10^(-3)^@ C`
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A copper cube of mass 200g slides down an a rought inclined plane of inclination 37^(@) an a constant speed Assume that any loss in mechanical energy goes into the copper block as thermal energy .Find the increase in the temperature of the block as if slides down through 60cm Specific head capacity of capper = 420J kg^(-1) K^(-1)

A block of mass 250 g slides down an incline of inclination 37^0 with a uniform speed. Find the work done against the friction as the block slides through 1.0 m.

Knowledge Check

  • A copper block of mass 1kg slides down one rough inclined plane of inclination 37^(@) at a constant speed. Find the increase in the temperature of the block as it slides down temperature of the block as it slides down through 60cm assuming that the loss in mechanical energy goes into the copper block as thermal energy. (specific heat of copper= 420Jkg^(-1)K^(-1),g=10ms^(-2) )

    A
    `6.6xx10^(-3).^@C`
    B
    `7.6xx10^(-3).^(@)C`
    C
    `8.6xx10^(-3).^(@)C`
    D
    `9.6xx10^(-3).^(@)C`

  • A copper block of mass 5kg slides down along a rough inclined plane of inclination 30^(@)C with a constant speed. The increase in the temperature of the block as it slide down through 100cm assuming that the loss of mechanical energy goes into copper block as thermal energy. (specific heat of copper 420 Jkg^(-1)K^(-1),g=10ms^(-2))

    A
    `1.19xx10^(-3) .^(@)C`
    B
    `2.38xx10^(-3) .^(@)C`
    C
    `1.19xx10^(-2) .^(@)C`
    D
    `2.38xx10^(-2) .^(@)C`

  • A block of mass 1 kg slides down a rough inclined plane of inclination 60^(@) starting from its top. If coefficient of kinetic is 0.5 and length of the plane d=2 m, then work done against friction is

    A
    2.45 J
    B
    4.9 J
    C
    9.8 J
    D
    19.6 J

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    A copper block of mass 60kg is heated till its temperature is increased by 20^(@)C Find the head supplied to the block specific head capacity of = 0.09 cal g^(-1)^(@)C

    A block slides down on inclined plane (angle of inclination 60^(@) ) with an accelration g//2 Find the coefficient friction

    A copper block of mass 0.06 kg is heated till its temperature is inreased by 20^(@)C . Find the heat supplied to the block. [specific heat of copper =9xx10^(-2)calg^(-1).^(@)C^(-1) ]

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    A block of mass 1 kg slides down on a rough inclined plane of inclination 60^(@) starting from its top. If the coefficient of kinetic friction is 0.5 and length of the plane is 1 m , then work done against friction is (Take g=9.8m//s^(2) )

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