Physics

Problem

Blocks A (

3\,\text{kg}

) and B (

5\,\text{kg}

) rest in contact on a horizontal surface with coefficient of kinetic friction

\mu_k = 0.10

. A horizontal force of

40\,\text{N}

is applied on block A toward the right. Take

g = 10\,\text{m\,s}^{-2}

. What is the magnitude of the force exerted by block A on block B? a)

32\,\text{N}

20\,\text{N}

25\,\text{N}

15\,\text{N}