Concept explainers
A spring AB is attached to a support at A and to a collar. The unstretched length of the spring is l. knowing that the collar is released from rest at
Want to see the full answer?
Check out a sample textbook solutionChapter 11 Solutions
VECTOR MECH...,DYNAMICS(LOOSE)-W/ACCESS
- Q6. As shown in the image below, two objects, A and B, are connected using the cable and pulley system. (The cable and pulley system is friction-less and weight-less.) If at this moment the acceleration of object Bis downward 2.3 m/s², determine the acceleration of object A (in m/s²2) at this moment. In this problem, downward motion is considered positive, and in your answer, negative sign must be included if the motion of A is upward. Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point, and proper SI unit. A B VBarrow_forwardQ4(a) A car starts from rest and travels with an acceleration of 0.3 m/s² for 150 seconds. After that, it travels with same speed for another 100 seconds then brakes are applied and it stops in 50 seconds at the next stop. Determine the total distance travelled by the car. (b) If the car is travelling with a uniform speed of 25m/s from start to end, critically evaluate its effect on the total time refer to Question Q4(a).arrow_forwardTwo bodies of masses 10 kg and 15 kg are hung from the ends of an extensible rope passing over a frictionless pulley. If masses of both the bodies are doubled, the acceleration of the system will also be doubled. Select one: O True O Falsearrow_forward
- 1. A chain of blocks is moving upward at 3 m/s. The tension in the cable connected to the top of the chain is To = 800 N. a. What is the acceleration of the chain of blocks? b. What is the tension in the cable connecting Block C and Block D? v = 3 m/s To = 800 N mA = 21 kg mB = 25 kg mc = 20 kg mp = 18 kg mg = 17 kg mp = 15 kg a = ? TCD = ?arrow_forward3. An automobile moving at a constant velocity of 45 ft per sec passes a gasoline station. Two seconds later, another automobile leaves the gasoline station and accelerates at the constant rate of 6 ft per sec?. How soon will the second auto mobile overtake the first?arrow_forward2. The horizontal rod OA rotates about a vertical shaft according to the relation 6 = 3t°, where 0 and t are expressed in rad/s and seconds, respectively. A 500 g collar B is held by a cord with a breaking strength of 37 N. Neglecting friction, determine, immediately after the cord breaks: a. How long it takes for the cord to break b. The relative acceleration of the collar with respect to the rod. c. The magnitude of the horizontal force exerted on the collar by the rod. Note: the horizontal force corresponds to ég direction d. When the collar breaks free from its initial position of 0.5 m and hits the stop at A which is 0.62 m from point O, calculate the angular velocity [rad/s] at this state. *Use initial angular velocity from when cord broke in order to solve for final angular velocity using conversation of angular momentum. 0.5 marrow_forward
- EXERCISE 2.53 Collar C is pushed along the guide bar defined by y= 2(1-0.25x²), where x and y have units of meters. The angular speed of arm AB that actuates the motion is the constant value = 20 rad/s, so = ct. Determine the forces exerted on the collar by arm AB and the guide bar at x = 1 m. The mass of the collar is 2 kg, and gravitational effects are ignorable. (Hint: use Cartesian and polar coordinates to solve the problem.)arrow_forwardA particle of mass 2.6 kg is attached to two cables CB and CA as shown. it revolves in a horizontal circle of radius 1.3 m at a constant speed of 8.45 m/s.arrow_forwardA block of mass m1 is located on an inclined plane θ and attached by a rope passing over a pulley with a weight of mass m2. If m1 > m2 find the tension and the acceleration.arrow_forward
- Find the magnitude and direction of the velocity at point B.arrow_forwardProblem (2) A turntable is used to test an intentionally weak adhesive by coating the bottom of a 0.3 kg block with the adhesive and pressing it firmly to the turntable 0.4 meters from its center. The turntable starts from rest at t = 0 and uniformly accelerates with an angular acceleration of a = 4.5 rad/s?. If the adhesive fails exactly 2 seconds after the turntable starts rotating determine: (a) The angular displacement of the turntable at the time of failure. (b) The number of revolutions the turntable has made at the time of failure. (c) The total shear force which the adhesive supports given this failure. 0.4 marrow_forwardThree identical springs (X, Y, Z) are arranged as shown. When a 4.0 kg mass is hung on X, the mass descends 3.0 cm. When a 6.0 kg mass is hung on Y, the mass descends: O 1.2.0 cm O 2.4.0 cm O 3.4.5 cm O 4.6.0 cm O 5.9.0 cmarrow_forward
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY