Q3. A man carrying a monkey on his shoulder does cycling smoothly on a circular track of radius 9 m and completes 120 resolutions in 3 minutes. The magnitude of centripetal acceleration of monkey is (in $\mathrm { m } / \mathrm { s } ^ { 2 }$ ):\\
(1) $57600 \pi ^ { 2 } \mathrm {~ms} ^ { - 2 }$\\
(2) Zero\\
(3) $4 \pi ^ { 2 } \mathrm {~ms} ^ { - 2 }$\\
(4) $16 \pi ^ { 2 } \mathrm {~ms} ^ { - 2 }$