(6%) Problem 12: A uniform beam of length L = 1.1 m and mass M= 34 kg has its lower end fixed to pivot at a point P on the floor, making an angle = 22 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. @theexpertta.com - tracking ... ... In accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. 33% Part (a) What is the y-component Py of the force, in newtons, exerted by the pivot on the beam? P..=668.28 Py= =668.3 Correct! T= 33% Part (b) Write an expression for the tension I in the horizontal cable AB. y B A P M M Otheexpertta.com Grade Summary Deductions Potential Submissions 5% 95% Attempts remaining: 11 (5% per attempt) detailed view cos(a) cotan(0) cos(Q) cos(0) sin(a) sin(Q) ()7 8 9 ^^4 5 6 HOME sin(0) tan(e) * 1 2 3 g M + - 0 END 1 n t T VO BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Hints: 1% deduction per hint. Hints remaining: 2 Feedback: 2% deduction per feedback. A 33% Part (c) What is the x-component Px of the force, in newtons, exerted by the pivot on the beam? 5% (6%) Problem 13: A uniform stationary ladder of length L = 4.9 m and mass M = 11 kg leans against a smooth vertical wall, while its bottom legs rest on a rough horizontal floor. The coefficient of static friction between floor and ladder is u = 0.37. The ladder makes an angle = 51 with respect to the floor. A painter of mass 8M stands on the ladder a distance d from its base. Otheexpertta.com @theexpertta.com - tracking id ccordance with Expert TA's Terms of Service. copying this information to any solutions shang website is strictly forbidden. Doing so may result in termination of your Expert TA Account. 33% Part (a) Find the magnitude of the normal force N, in newtons, exerted by the floor on the ladder. N= () 7 8 9 EMN4 5 6 1 2 3 sin() cotan() cos( tan() asin() acos( atan cosh() acotan() tanh() Degrees Radians sinh() cotanh() * + - 0 VO BACKSPACE HOME Grade Summary Deductions Potential Submissions 5% 95% Attempts remaining: 11 (5% per attempt) detailed view END 1 5% DEL CLEAR Submit Hint Feedback I give up! Hints: 1% deduction per hint. Hints remaining: Feedback: 2% deduction per feedback. A 33% Part (b) Find an expression for the magnitude of the normal force Nw exerted by the wall on the ladder. 33% Part (c) What is the largest distance up the ladder dmax in meters, that the painter can stand without the ladder slipping? (6%) Problem 14: A painter (of mass 79 kg) needs to reach out from a scaffolding to paint the side of a building, so he lays a plank across two bars of the scaffolding, and puts a heavy bucket of mass 24 kg directly over one of the bars (see figure). You can assume the plank is massless, and is long enough to reach to the other building. @theexpertta.com - tracking id: iccordance with Expert TA's Terms of Service. copying this L d Otheexpertta.com information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. If the bars are separated by a distance 1.9 m, how far, d, from the bar on the the right can the painter walk before the plank starts to fall? d=3.29 m Grade Summary Deductions Potential Submissions 5% 95% Attempts remaining: 11 (5% per attempt) sin( cotan cos() tan asin() acos () 7 8 EMN4 9 HOME 5 6 atan acotan() cosh() tanh() Degrees Radians sinh() cotanh() / * 1 2 3 = - 0 END 1 VO BACKSPACE DEL CLEAR detailed view 5% Submit Hint Feedback I give up! Hints: 1% deduction per hint. Hints remaining:. Feedback: 2% deduction per feedback.