2. The uniform 10 kg ladder shown below rests against the smooth wall at B and the bottom end rests on the rough horizontal plane having a coefficient of static friction of u= 0.3. Determine the angle of inclination of the ladder and the normal reaction at B if the ladder is on the verge of sliding. ° 0kg 9.81 = = 98.1 N 4 m 4 cos 9801 2050 / 201 FB 1100 F=