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The two thigh bones (femur bones) each o...

The two thigh bones (femur bones) each of cross-sectional area `10 cm^(2)` support the upper part of a human body of mass 40 kg . Estimate the average pressure sustained by the femurs. `g=10m//s^(2)`

Text Solution

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`2 xx 10^(5) N m^(-2)`
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Explore conceptually related problems

The two thigh bones (femurs) each of cross-sectional are 10 cm^(2) support the upper part of a human bodu of mass 40 kg . Estimate the average pressure sustained by the femurs. g=10m//s^(2)

Find the potential energy gained by a body of mass 50 kg, if it is raised by 10m. (use g = 10 m//s^(2) )

Knowledge Check

  • The two femurs each of cross-sectional area 10 cm^(2) support the upper part of a human body of mass 40 kg. the average pressure sustained by the femurs is (take g=10 ms^(-2))

    A
    `2xx10^(3)Nm^(-2)`
    B
    `2xx10^(4)Nm^(-2)`
    C
    `2xx10^(5)Nm^(-2)`
    D
    `2 xx10^(6)Nm^(-2)`

  • The two thigh bones each of cross-sectional area 15 cm^(2) support the upper part of a person of mass 70 kg. The pressure sustained by these thigh bones is

    A
    `2.5xx10^(5) N m^(2)`
    B
    `1.33xx10^(5) N m^(2)`
    C
    `4.66xx10^(5)xx10^(5) Nm^(2)`
    D
    `2.33xx10^(5) N m^(2)`

  • Find the potential energy gained by a body of mass 60 kg, if it is raised by 12 m. (use g = 10m//s^(2) )

    A
    7200
    B
    50
    C
    3600
    D
    25

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    If a compressive force of 3.0xx10^(4)N is exerted on the end of a 20 cm long bone of cross-sectional area 3.6cm^(2) (i) will the bone break and (ii) if not by how much length does it shorten? Given compresive strength of bone =7.7xx10^(8)N//m^(2) and young's modulus of bone =1.5xx10^(10)N//m^(2)

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    The foot of an elephant has an area of 275cm^(2) . If the mass of the elephant is 2200 kg, find the pressure exerted by the on the ground. ( g=10ms^(-2) )

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