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An elevator starts up from rest at the basement with the acceleration of 4m/s2 ,Apassenger in the elevator will feel?

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  • An elevator starts up from rest at the basement with the acceleration of 4m/s2 ,Apassenger in the elevator will feel?


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Answer #1 | 29/04 2014 18:55
A - increased weight. [What someone feels when standing stationary on the ground is the ground's reaction, R, on their feet, which in this case is R = mg, ie., their weight. In the upward moving elevator R = m(g + 4) > mg, so their sensation is of increased weight. If the elevator were falling with an acceleration a, then R = m(g - a). If a = g (free fall), R = 0, i.e., weightlessness].
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