A) \[3.75{{\pi }^{2}}\,erg\]
B) \[375{{\pi }^{2}}\,erg\]
C) \[0.375{{\pi }^{2}}\,erg\]
D) \[37.5{{\pi }^{2}}\,erg\]
Correct Answer: B
Solution :
Kinetic Energy\[=\frac{1}{2}m{{\omega }^{2}}({{a}^{2}}-{{y}^{2}})\] \[KE=\frac{1}{2}\times 10\times {{\left( \frac{2\pi }{2} \right)}^{2}}\times ({{10}^{2}}-{{5}^{2}})\] \[KE=\frac{1}{2}\times 10\times \frac{4{{\pi }^{2}}}{4}\times (100-25)\] \[KE=375{{\pi }^{2}}\,erg\]
You need to login to perform this action.
You will be redirected in
3 sec
