A) \[{{z}_{2}}-{{z}_{1}}=30\,cm\]
B) \[{{z}_{2}}-{{z}_{1}}=10\,cm\]
C) \[{{z}_{2}}-{{z}_{1}}=20\,cm\]
D) \[{{z}_{2}}-{{z}_{1}}=15\,cm\]
Correct Answer: D
Solution :
[d] \[{{z}_{1}}=0.4-x\] & \[{{z}_{2}}=0.4+x\] So, \[{{z}_{2}}-{{z}_{1}}=2x\] \[{{y}_{2}}-{{y}_{1}}=\frac{{{\omega }^{2}}{{\left( 0.2 \right)}^{2}}}{2g}-\frac{{{\omega }^{2}}{{\left( 0.1 \right)}^{2}}}{2g}\] \[=\frac{{{10}^{2}}{{\left( 0.2 \right)}^{2}}}{2\times 10}-\frac{{{10}^{2}}{{\left( 0.1 \right)}^{2}}}{2\times 10}=\frac{15}{100}m\] \[{{y}_{2}}-{{y}_{1}}={{z}_{2}}-{{z}_{1}}=2x=15cm\]You need to login to perform this action.
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