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Mekhanik [1.2K]
3 years ago
13

When an athlete holds a barbell overhead, the reaction force is the weight of the barbell on his hand. how does this force vary

for the case where the barbell is decelerated upward?
Physics
1 answer:
Sonja [21]3 years ago
3 0
The force applied by the competitor is littler than the heaviness of the barbell. At the point when the barbell quickens upward, the power applied by the competitor is more prominent than the heaviness of the barbell. When it decelerates upward, the power applied by the competitor is littler than the heaviness of the barbell.
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The rate of diffusion for a body having larger surface area as compared to the ratio of surface area to volume will be more than a body having less surface area. Mathematically it can written as-

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As per the question,the ratio of surface area to volume for a sphere is given 0.08m^{-1}

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Hence, it is obvious that the ratio is more for right circular cylinder.As the rate diffusion is directly proportional to the surface area to volume ratio,hence rate of diffusion will be more for right circular cylinder.

Hence the correct option is B. The rate of diffusion would be faster for the right cylinder.


5 0
3 years ago
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6 0
3 years ago
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photoshop1234 [79]

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prohojiy [21]
From the information given above, 
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