Engineering Mechanics (1st Sem) PYQs & Answer

[Virtual Presenter] Welcome to the presentation on XYZ Services. We are a company that provides top-tier customer service solutions. Our solutions are designed to help customers get the best possible experience when interacting with our brand. Our team is committed to delivering the highest quality customer service and innovative solutions that will meet our customers' needs. We strive to exceed our customers' expectations and deliver outstanding value. Let us show you how our solutions can help you achieve your service goals..

[Audio] Four problems related to the physics of force and tension are presented in the slide. Each requires some kind of calculation or determination. The first problem requires calculation of the magnitude of the force supported by the pin at C when the 900 N force is applied to the bracket. The second problem requires calculation of the tension in the cable DC. The third problem requires calculation of the maximum angle O so that the frame remains in equilibrium. The fourth problem requires determination of the mass of the cylinder. These problems can be solved with basic physics calculations..

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[Audio] For this slide we will be analyzing two separate topics regarding XYZ Services. The first is a mathematical issue concerning the motion of a confined pin where we need to figure out the radius of curvature at the moment when t = 2 seconds The second problem has to do with a two-force member and discovering the tension in the cable taking into account the coefficient of friction. Additionally we must answer two short notes concerning two and three-force members as well as acceleration in two-dimensional motion referring to normal-tangent co-ordinates..

EX(ES/EMrr103B/2023 B. E. CIVIL/CHEMICAWELECTRICAIJMETALLURGICAL ENGINEERING EXAMINATION - 2023 (FIRST YEAR, FIRST SEMESTER) SUBJECT: ENGINEERING MECHANICS (MODULE B) Time: 3 Hours Full Marks: 100 (10/10) Any missing datalinformation may be assumed with suitable iugtification The umbols/notations carry its usual meanings Consider 2 = 9.81 m/s wherever necessary Draw Free Body DiaeranÆ wherever necessary ANSWER ANY TEN OUESTIONS QL The 120-N force is applied as shown to one end of the curved wrench (Fig. QI). If a =300, calculate the moment of F about the center O of the bolt. Determine the value of a which would maximize the moment about O; state the value of this maximum moment. Q2. Two forces act on the rectangular plate as shown in Fig. Q2. Determine the resultant of the system, expressed as a single force, if possible, with its line ofaction. Q3. The 50-kg homogeneous smooth sphere (Fig. Q3) rests on the 300 incline A and bears against the smooth vertical wall B. Calculate the contact forces at A and B. Fig. Fig.Ql Fig.Q2 Page I of 3.

[Audio] To answer the fourth question of this slide we need to calculate the magnitude of the force supported by the pin at A under the action of the 1.5-kN force while neglecting friction in the slot. For the fifth question we need to calculate the tensions in cables AB AC and AD as seen in Fig. Q5. The sixth question requires us to calculate the force P required to move the uniform 7-m pole which has a mass of 100 kilograms when the coefficient of static friction at each contact point is 0.40. For the seventh question we need to determine the coordinates of the centroid of the shaded area in Fig. Q7. Finally for the eighth question we have to determine the moment of inertia and the radius of gyration of the shaded area in Fig. Q8 about the x-axis..

[Audio] The given text presents a series of questions on motion and force. The first question requires deriving expressions for the distance and time required for the velocity to reduce to half its initial value given the initial velocity and the equation of acceleration. The second question requires using an accelerometer reading to calculate the radius of curvature for that instant when a train is entering a curved horizontal section of track and slowing down to 50 kilometers per hour in 12 seconds. The third question involves determining the magnitude and tangential acceleration of a particle with a given mass moving along a vertical plane track taking into account the coefficient of kinetic friction between the particle and the track. Finally the fourth question requires addressing topics related to force and motion including free vectors two-force and three-force members theorems of Pappus and expressions of acceleration in normal-tangent coordinate system..

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