Question

g Two boxes with a mass of 34 kg each are resting on a surface where the coefficient of static friction is LaTeX: \mu_sμ s = 0.4. Knowing that LaTeX: \thetaθ = 26LaTeX: ^\circ∘, determine the force P required to cause the boxes to slide. Enter the magnitude of P below in N to the nearest whole N.

Answer 1

Answer:

P = 303N

Explanation:

The diagram was missing. Attached you can find the correct diagram.

With a sum of forces on box A:

$T-F_{fa}=0$    where $F_{fa}=\mu s*m*g$

Solving for T:

$T=\mu s*m*g$

T=136N

Now, on box B:

$P*cos\theta-T-F_{fb}=0$  Where T=136N;  $F_{fb}=\mu s*m*g$

Solving for P:

$P = \frac{T+F_{fb}}{cos\theta}$

P = 303N