MCQOPTIONS
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MCQOPTIONS
| 1. |
A balloon with mass 'm' is descending down with an acceleration 'a' (where a < g). How much mass should be removed from it so that it starts moving up with an acceleration 'a'? |
| A. | \[\frac{2ma}{g+a}\] |
| B. | \[\frac{2ma}{g-a}\] |
| C. | \[\frac{ma}{g+a}\] |
| D. | \[\frac{ma}{g-a}\] |
| Answer» B. \[\frac{2ma}{g-a}\] | |