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FinnZ [79.3K]
3 years ago
7

What will a spring scale read for the weight of a 75.0-kg woman in an elevator that moves upward with constant speed of 5.8 m/s

?
Physics
1 answer:
Sholpan [36]3 years ago
7 0
<span>On the scale the only external forces are the man's weight acting downwards and the normal force which the scale exerts back to support his weight. So F = Ma = mg + Fs The normal force Fs (which is actually the reading on the scale) = Ma + Mg But a = 0 So Fs = Mg which is just his weight. Fs = 75 * 9.8 = 735N</span>
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Explanation:

It is given that,

Speed of the ball, v = 10 m/s

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(a) Let H is the maximum height reached by the ball. It can be calculated using the conservation of energy as :

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h'=\dfrac{v^2}{2g}

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So, the maximum height reached by the ball is 25.1 meters.

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Hence, this is the required solution.                              

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