{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

General expression for the center of mass what if the

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: equa;ons we get: θ = 28.6 o Total KE before collision: Ki = v = 2.9 m / s 1 × 0.2 × 4 2 = 1.6 J 2 1 1 Total KE aWer collision: K f = × 0.2 × 2 2 + × 0.2 × 2.9 2 = 1.2 J 2 2 Clearly a frac;on of KE is lost and the collision is inelas;c. Note: This is not common textbook example of billiard ball collisions, which is oWen taken as elas;c collision. The center of mass When you throw an extended odd ­shaped object, how does it ﬂy ? Does it follow a parabola ? What if it rotates ? There seems to be some privileged ‘spot’ on the object that follows a perfect parabola. If we have an collec6ve system, there is a special loca6on associated with the system which moves as though: (1)  All the system’s mass were concentrated there, at that point. (2)  All external forces were applied at that point. This loca6on is the center ­of ­mass (CM or COM) Center of mass (contd…) For a system consis6ng of two point masses, m1 & m2, separated...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online