If block B weighs 300 lb and block C weighs 200 lb, determine the following: 3.1 The required angle for equilibrium is Blank 1°. 3.2 The required weight of block D for equilibrium is Blank 2 lb. 3.3...

If block
B
weighs 300 lb and block
C
weighs 200 lb, determine the following:

3.1 The required angle for equilibrium is Blank 1°.

3.2 The required weight of block
D
for equilibrium is Blank 2 lb.

3.3 If block
D
weighs 253 lb and the measure of angle = 39.2°, determine the required weight of block
B
for equilibrium.