Incorrect

The end rollers of bar $AB$ are constrained to the slot shown. If roller A has a downward velocity of $2\mathrm{.}95\frac{m}{s}$ and this speed is constant over a small motion interval, determine the tangential acceleration $(a_B{)}_t($positive if to the right, negative if to the left$)$ of roller $B$ as it passes the topmost position. The value of $R$ is $0\mathrm{.}61$ m $.$

Answer: $(a_B{)}_t=\frac{m}{s^2}$

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