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(7%) Problem 6: A uniform beam of length L=22 m and mass M = 42 kg has its lower end fixed to pivot at a point on the floor, making an angle 8 = 12e as shown in the diagram. A horizontal cable is attached at its upper end B to a point A on a wall. A box of the same mass Mas the beam is suspended from a rope that is attached to the beam one-fourth L from its upper end. 33% Part (a) What is the y-component Py of the force, in newtons, exerted by the pivot on the beam? Py = ed at ( 7 8 9 E 4 5 sino cos tan cotano) asino acoso atan acotano sinh cosho tanho cotanho Degrees O Radians 6 3 1 2 + 0 vo Submi Hint I give up! Hints: 10 deduction per hint. Hints remaining- Feedback: 2 deduction per feedback 33% Part (b) Write an expression for the tension T in the horizontal cable AB. 33% Purt (e) What is the x-component P, of the force, in newtons, exerted by the pivot on the beam?
(7%) Problem 7: A uniform stationary Indder of length L. and mass Mleans against a smooth vertical wall, while its bottom logs rest on a rough horizontal floor. The coefficient of static friction between floor and ladder is . The ladder makes an angle with respect to the floor. A painter of weight 1/2M stands on the ladder a distance d from its base Otheexperta.com * What is the largest value for din centimeters, such that the ladder will not slip? Assume that ladder is 4.5 m long, the coeficient of friction is 0.52, the ladder is at an angle of 41", and the ladder has a mass of 65 kg. Grade Summary 1.82 Deductions Potential 1005 Am 7 8 9 न E1 sin COSO tan cofano asino acoso atan acotan) sinbo cosho tanho cotanho Degrees O Radians Submissions Attempts remaining: (o per attempo detailed view 5 6 23 + 0 IND "VO BACKPACH CULAR Submit Hint Feedback ve up! deduction per hit Hints remaining Feedback deductive per feedback