Question

1C) A 100-lb block A is lowered using a rope and two fixed pegs B and C. If the static coefficient of friction between the rope and pegs is $mu_s$=0.3, determine the total angle of wrap ($eta_{tot} = eta_B + eta_C$) and the minimum force ($P_{min}$) to barely hold the block in equilibrium. (5 pts) $eta_{tot}$= _______ degrees (3 pts) $P_{min}$= _______ lbs (2pts)

          1C) A 100-lb block A is lowered using a rope and two fixed pegs B and C. If the static coefficient of friction between the rope and pegs is $mu_s$=0.3, determine the total angle of wrap ($eta_{tot} = eta_B + eta_C$) and the minimum force ($P_{min}$) to barely hold the block in equilibrium. (5 pts)
$eta_{tot}$= _______ degrees (3 pts)  $P_{min}$= _______ lbs (2pts)

1C) A 100-lb block A is lowered using a rope and two fixed pegs B and C. If the static coefficient of friction between the rope and pegs is mus=0.3, determine the total angle of wrap (etatot = etaB + etaC) and the minimum force (Pmin) to barely hold the block in equilibrium. (5 pts)
etatot= degrees (3 pts) Pmin= lbs (2pts)

Added by Paul G.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Supreeta N

10/30/2023

Step 1

The weight of the block (W) acts vertically downwards, and the tension in the rope (T) acts horizontally. The frictional force (F) between the rope and the pegs acts perpendicular to the tension in the rope. Show more…

Show all steps

Thanks for your feedback!

1C) A 100-lb block A is lowered using a rope and two fixed pegs B and C. If the static coefficient of friction between the rope and pegs is μs = 0.3, determine the total angle of wrap (βTot = βB + βC) and the minimum force (Pmin) to barely hold the block in equilibrium. (5 pts) βTot = degrees (3 pts) Pmin = lbs (2pts)