Angular Speed of Sphere - General Physics - Past Paper, Exams of Physics

Download Angular Speed of Sphere - General Physics - Past Paper and more Exams Physics in PDF only on Docsity! UNIVERSITY OF GAZIANTEP DEPARTMENT OF ENGINEERING PHYSICS EP 105 General Physics I Second Midterm Exam Questions 29/12/2005 TIME 100 min. [1]. A ball of mass m moving at speed of 4.2 m/s strikes an another ball of same mass which is at rest. After the collision, one ball is found to be moving at a speed of 2.1 m/s in a direction making a 60o angle with the original line of motion. (a) Find the velocity and direction of other ball. (b) What can you say about the collision, elastic or inelastic? [2]. A solid sphere of mass m = 1 kg and radius R=10 cm rolls without slipping in a cylindrical trough of radius 5R as shown in Figure. The sphere is released from point A and passes through at the bottom of the trough (point B). Find (a) the angular speed of the sphere at point B (b) the linear momentum of the sphere at point B (c) the angular momentum of the sphere about its center of mass at point B (Isphere = 2 mR2/5) [3]. The two blocks are connected over the pulley whose mass is m = 0.6 kg and radius r = 3 cm as seen in Figure. The mass of block A is 12 kg and block B is 24 kg. The coefficient of kinetic friction between the blocks and the surfaces are 0.20. Determine: (a) the linear acceleration of the blocks, (b) the angular acceleration of the pulley, (c) the tensions in the string ( Ipulley= m r 2/2) [4]. A uniform steel meter bar, weighting 1 kg, rests on two scales at its ends. A 2 kg block is placed at the 15 cm mark. Find the reading on the scales. Useful constants: g = 9.8 m/s2, sin30=0.5, cos30=0.86 A B 30o 60o m 5R R m B A ω