A) 32 N
B) 30 N
C) 24 N
D) 48 N
Correct Answer: A
Solution :
| [a] \[m{{g}_{h}}=\frac{m{{g}_{0}}}{{{\left( 1+\frac{h}{R} \right)}^{2}}}\] |
| \[W=\frac{72}{{{\left( 1+\frac{R/2}{R} \right)}^{2}}}\] |
| \[W=\frac{72}{{{(3/2)}^{2}}}=\frac{4}{9}\times 72=32\,N\] |
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