Question

C What is conserved in the following cases (linear momentum, angular momentum about an axis, mechanical energy, tionle kinetic energy, none of these)? There may be more than one conserved quantity. For this question, you do not have to show your reasoning (a) Two masses are released from rest, from the positions shown in the figure, in a frictionless hemispherical bowl. The masses collide and stick together. Note that the circular motion is characterized simultaneously by the linear and angular momenta.) i. What is conserved during the collision? ii. What is conserved in the motion after the collision? LO SU 39.3 40.1 40.2 48.1 48.2 50.1 59.1 59.2 (b) A uniform rod rests on a frictionless horizontal surface. The rod pivots about a fixed, vertical frictionless axis at one end. The rod is initially at rest. A bullet traveling parallel to the horizontal surface and perpendicular to the rod strikes the rod at its center and becomes embedded in it. What is conserved for the bullet-rod system during the collision?

Answer 1

(C) (a) (i) What is conserved during the collision. Ans Linear momentum (ii) After collision Ans Linear momentum and angular momentum (b) During collision angular momentum about pivot is conserved.