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2 years ago

When a person falls from certain height on cemented floor, he receives more injuries why

Physics

1 answer:

monitta2 years ago

8 0

Explanation:

When a man falls on a hard cemented floor his momentum reduced to zero in a very short time and hurt the man. Whereas when a man falls on a heap of sand. As sand can compress, it takes longer time for the man to hit the ground (or hard surface)

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3 years ago

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valentinak56 [21]

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2 years ago

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Answer:

Part a)

Moment of inertia of the cylinder is given as

$I = 1.21 \times 10^{-4} kg m^2$

Part B)

Height of the cylinder is of no use here to calculate the inertia

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Since we don't know about the viscosity data of the soup inside the cylinder so we can't say directly about the moment of inertia of the cylinder as $I = 1/2 mR^2$

Explanation:

As we know that the inclined plane is of length L = 3 m

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$v_f^2 = 0 + 2a(3)$

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$v_{avg} = \frac{L}{t} = \frac{v_f + v_i}{2}$

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Now we have know that final speed of the cylinder due to pure rolling is given as

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Part B)

Height of the cylinder is of no use here to calculate the inertia

Part C)

Since we don't know about the viscosity data of the soup inside the cylinder so we can't say directly about the moment of inertia of the cylinder as $I = 1/2 mR^2$

8 0

3 years ago

When a person falls from certain height on cemented floor, he receives more injuries why​

When a person falls from certain height on cemented floor, he receives more injuries why