A) \[990\,cm/{{s}^{2}}\]
B) \[680\,cm/{{s}^{2}}\]
C) \[750\,cm/{{s}^{2}}\]
D) \[650\,cm/{{s}^{2}}\]
Correct Answer: A
Solution :
When stone is tied to a 80 cm long string and whirled in a circle the centripetal force is provided by the tension in the string created by drawing the string inwards. If angular velocity is \[{{V}_{0}}={{V}_{e}}\] and radius of circular path is r then acceleration \[\mathbf{\vec{P}}=a\mathbf{\hat{i}}+3\mathbf{\hat{k}}\] where \[\vec{Q}=a\mathbf{\hat{i}}-2\mathbf{\hat{j}}-\mathbf{\hat{k}}\] \[4.24\times {{10}^{6}}m/s\] and \[5.25\times {{10}^{6}}m/s\] Hence, \[6.25\times {{10}^{6}}m/s\]You need to login to perform this action.
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