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Introductory Physics Homework Help
Conservation of linear, angular momentum and energy in a collision
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[QUOTE="paalfis, post: 4912456, member: 515245"] [h2]Homework Statement [/h2] Mass 2 collides with mass 1 as shown in the image, mass 1 is attached to the stick and it is initially stationary. Consider that the stick is massless and can rotate around the point O. The entire system is on a frictionless table. Which magnitudes are conserved in the system {m1,m2} before, during and after the collision? Comments: no information is given (at this stage of the problem) about what kind of collision we are talking about. [h2]The Attempt at a Solution[/h2] Before the collision: [LIST] [*]External Forces sum up to zero-->Linear Momentum is conserved. [*]For the same reason, angular momentum with respect to O is conserved. [*]There are not any non conservative forces in the system-->Mechanical energy is conserved. [/LIST] During the Collision: [LIST] [*]The bar exerts a force on the ball (Tension) --> linear momentum is not conserved. [*]The tension is a central force --> Angular Momentum is conserved. [*]The Tension is perpendicular to the movement of m2, so energy is conserved. [/LIST] After the collision: I think it is exactly the same as during the collision, is this ok?The next question is, in which direction does m2 move after the collision. [/QUOTE]
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Introductory Physics Homework Help
Conservation of linear, angular momentum and energy in a collision
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