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A billiard ball is a small, hard ball used in cue sports, such as carom billiards, pool, and snooker. The number, type, diameter, color, and pattern of the balls differ depending upon the specific game being played. Various particular ball properties such as hardness, friction coefficient and resilience are very important to the finer points of gameplay. From Wikipedia under the
GNU Free Documentation License a collision occurs between three moving billiard balls such that no net external force acts on the three ball ? Q. a collision occurs between three moving billiard balls such that no net external force acts on the three ball system. is the momentum of each ball conserved during the collision. and why? Asked by mr.t - Tue Oct 28 17:40:05 2008 - - 2 Answers - 0 Comments A. No, the sum of the 3 balls' momenta is constant, but each ball's momentum can change. The only claim made by conservation of momentum is that with no external forces the total system momentum remains the same. Answered by kirchwey - Tue Oct 28 18:00:52 2008 A smooth billiard ball is projected with speed u, prove that e1 Q. A smooth billiard ball is projected with speed u from A, the corner of a rectangular table ABCD so as to strike first the side of BC, then the side CD, and then return to the point A. The angle that its initial direction of motion makes with AB is @ (can't type alpha here). Show that this is impossible unless e1 A. Okay, this is going to be difficult to show here. A___B ..|.\..@...| ..|...\...| ..|...\...| ..|...\...| ..|...\...| ..|...\...| ..|...\...| ..|...\...| ..|...\...| ..|...\...| ..|...\...| ..|...\...\.| ..|...\.../| z1 ..|...\.../.| ..|...\.../..| D___\_/__C ... z2 I hope you get the picture. In elastic collisions the incoming angle of impact is equal to the outgoing angle of impact. However, this is not the case here. At z1 the incoming angle of impact is @ (by similar triangles) and the outgoing angle is &. ...\ @\ ---\ &./ .../ at z2 the angles of impact are % and $ \$ | %/ .\..|.../ ..\.|./ ...\|/ Using similar triangles, we can determine the following: [A:B] means the length of AB tan@ = [B:z1]/[A:B] tan& = [z1:C]/[C:z2] tan$ =… [cont.] Answered by Jenelle - Fri Jun 8 13:17:02 2007 billiard ball problem?
Q. a billiard ball initially at rest is given a sharp impulse by a cue. the cue is held a distance h above the centerline. the ball leaves the cue with a speed v0 and, because of its 'forward english', eventually acquires a final speed of (9/7)v0. show that: h = 4/5 r, where r is the radius of the ball. Asked by Bhaskar - Tue Nov 11 05:45:04 2008 - - 1 Answers - 0 Comments A. Take a line on the billiard table, passing through the lowest point of the ball. Let this line be AB. All the forces on the ball pass through the ball's lowest point and hence through AB. Therefore torques of all forces about AB = 0 Therefore angular momentum about AB is conserved. Initial linear speed = v0 The point where impulse is applied is at height r+h above AB. Therefore, initial angular momentum of the ball about AB = m v0 (r + h)---(1) Final linear speed = (9/7)v0 Finally the ball rolls without skidding. In that case, angular speed = linear speed/radius Therefore, final angular speed w = (9/7)v0/r Moment of inertia of the ball about AB is I = 2/5 mr^2 + mr^2 = 7/5 mr^2 Therefore total final angular momentum of the ball about… [cont.] Answered by Somu - Tue Nov 11 08:01:33 2008 From Yahoo Answer Search: "Billiard ball"  news.google.com Nuclear Street - Nuclear Power Portal (blog) ... some of the kinetic energy from the neutron is transferred to the water molecule, much like a cue ball hitting another billiard ball of the same size. ... and more » news.google.com Inside POOL Magazine Former Derby City All-Around champion Justin Miller bested forner Ring Bank champion Brian Gregg in a match that came down to the last ball . ... and more » news.google.com Inside POOL Magazine Mika Immonen caps off his legendary year by claiming the World 10- Ball title in Manila, Philippines. Get pool lessons from Tom Simpson, Bob Henning and Matt ... From Google News Search: "Billiard ball"  npr.org unknown Mon, 08 Mar 2010 05:23:06 GM Thus, for Newton, what IS the Actual state of the . billiard ball. system in terms of positions and momenta, causally determines the next Actual state of the system, as revealed by integration of his equations of motion. ...  ktbilliards.com admin ue, 09 Feb 2010 17:14:40 GM Video of Levent performing the . ball. trick with full sized 2 1/4 inch (57 mm) diameter . balls. on stage on a cruise ship in 2008. To learn more about the . ball. .  poolroomtees.blogspot.com PoolRoomTees ue, 23 Jun 2009 14:56:00 GM Do you have a pool table at home and need a . Pool Ball. Polisher but cannot afford the $300-$600 cost for these? Well thanks to Force Follow, I have learned to build my own for a low cost price of $35. And to my surprise, ... From Google Blog Search: "Billiard ball" |
