JEE Main 27 June 2022 Shift 2 Solved Paper

A rolling wheel of 12‌kg is on an inclined plane at position P and connected to a mass of 3‌kg through a string of fixed length and pulley as shown in figure. Consider PR as friction free surface. The velocity of centre of mass of the wheel when it reaches at the bottom Q of the inclined plane PQ will be ‌

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√xghm∕s. The value of x is_____