The rotational moment is the product of angular acceleration and
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- Question 27 Notyet an A circular wheel of mass 50 kg and radius 200 mm is rotating at 300 r.p.m. Find its kinetic energy. A- =|三 Enter your answer here....3. Determine the vector magnitudes and directions for the relative velocities VA/B and VB/A, given these magnitudes and directions for the vectors VA and VB: (a) VA: magnitude 70km/h; direction 30° VB: magnitude 50km/h; direction 125°A wheel of diameter 500 mm is rotating at 40 revolutions per second. Linear velocity at half of the wheel radius is
- A shaft is rotating at a uniform speed with four masses m1, m2, m3 and m4 of magnitudes 300 kg, 450kg, 360kg and 390 kg respectively. The masses are rotating in the same plane. The corresponding radii of rotation are 200mm, 150mm, 250mm and 300mm. The angles made by these masses with respect to horizontal are 0°, 45°, 120° and 255° respectively. 1) Check the magnitude and position of balance mass if it radius of rotation is 200mm, and 2) Evaluate the effect of adding the balance mass to the system. solve it using garphical methodQUESTION 4 B 2.3 m 4.5 m 0 = 28° 41° @Bc= 3.6 rad's' C Fig. 4 For the rigid body shown in Fig. 4: a) Identify the type of rigid-body motion for slider A, link AB, and link BC. Define your positive direction for translation and rotation. b) By using the vector method, calculate the magnitude of velocity at point B, magnitude of velocity at point A and angular velocity of the link AB. Show detail calculation including separate kinematic diagram for each link.A flywheel rotating with an angular velocity of 450 rad/s is uniformly accelerated at a rate of 15 rad/s² for 28 sec. Find the final angular velocity of the flywheel both in rad/s and rpm.
- 1. If a rigid body is in translation only, the velocity at points A and B on the rigid body. a. are usually different b. are always the same c. depend on their position d. depend on their relative positionA 45 • wedge is pushed along a table with constant acceleration A. A block of mass m slides without friction on the wedge. Find the block's acceleration. Gravity is directed .down y m - A1. Fig. 1 Shows an aerofoil cutting mechanism which has a laser cutting device located at point E - the path traced out by this point corresponds to the required aerofoil shape. The laser device can be considered as a point mass of 20kg at E. The other links can be assumed massless and you can ignore forces due to gravity in your analysis. The crank CD is driven at a constant angular velocity, wo, If = 10 rad/s show that in the position shown the x and y components of acceleration at point E are respectively: fex = 178.4 m/s² (to the right); fey = 30.6 m/s² (upwards): (a) (i) Hence, determine the force acting on link EBC at B due to link AB (FB) (ii) Show by means of clearance diagrams the direction of the forces at B and A (b) (c) (d) Determine the X and Y components of the force acting on link EBC at C due to the crank (Fcx, Fcy) Determine the torque, T, input or output due to the acceleration of the laser device at this instant. Determine the resultant force acting on the bearing at…
- 9. Which of the following is not a scalar quantity (A) Time (B) Mass (C) Volume (D) AccelerationA shaft is rotating at a uniform speed with four masses mı, m2, m3 and m4 of magnitudes 300 kg, 450kg, 360kg and 390 kg respectively. The masses are rotating in the same plane. The corresponding radii of rotation are 200mm, 150mm, 250mm and 300mm. The angles made by these masses with respect to horizontal are 0°, 45º, 120° and 255° respectively. 1) Check the magnitude and position of balance mass if it radius of rotation is 200mm, and 2) Evaluate the effect of adding the balance mass to the system.The following diagram shows a piston moving in a cylinder with rod AB. Point B is rotating clockwise with an angular velocity of w. cylinder piston A connecting rod crank bearing B ResearchGate The motion of B is given by the equation r = C cos(wt) + Dsin(wt) Were r is the horizontal +vertical distance of B from O, and C, D are constants. For C=D=42mm and w = 20 rad/s. (i) Write r in the form Rcos (wt ± ß) and state the amplitude and period of r. (ii) Sketch one complete cycle of r. (iii) Explore the differences between the derived form and drawn form