In Fig. 5-34, $A$ is a $4.4-\mathrm{kg}$ block and $B$ is a $2.6$ -kg block. The coefficients of static and kinetic friction between $A$ and the table are $0.18$ and 0.15. (a) Determine the minimum mass of the block $C$ that must be placed on $A$ to keep it from sliding. (b) Block $C$ is suddenly lifted off $A$. What is the acceleration of block $A$ ?
Added by Heather H.
Step 1
We can use the equation $m_C = \frac{m_A \cdot \mu_s \cdot g}{\mu_s + \mu_k}$, where $m_A = 4.4 \, \text{kg}$, $\mu_s = 0.18$, $\mu_k = 0.15$, and $g = 9.8 \, \text{m/s}^2$. Show more…
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