Q$\mathrm{.}24$

Two blocks A and $B,$ each having a mass of $6\mathrm{.}5$ kg $,$ are connected by the linkage shown in $($Figure $1).$

Part A

If the coefficient of static friction at the contacting surfaces is ${}_s=0\mathrm{.}5,$ determine the largest vertical force $P$ that can be applied to pin $C$ without causing the blocks to move. Neglect the weight of the links

Express your answer to three significant figures and include the appropriate units.

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