As the drawing illustrates, two disks with masses m 1 and m 2 are movinghorizont

Question

As the drawing illustrates, two disks with massesm1 and m2 are movinghorizontally to the right at a speed of v0.They are on an air-hockey table, which supports them with anessentially frictionless cushion of air. They move as a unit, witha compressed spring between them, which has a negligible mass. Thenthe spring is released and allowed to push the disks outward.Consider the situation where disk 1 comes to a momentary haltshortly after the spring is released. Assuming thatm1 = 1.8kg,m2 = 3.2 kg, and v0 =6.0 m/s, find the velocity of disk2 at that moment _____________m/s As the drawing illustrates, two disks with massesm1 and m2 are movinghorizontally to the right at a speed of v0.They are on an air-hockey table, which supports them with anessentially frictionless cushion of air. They move as a unit, witha compressed spring between them, which has a negligible mass. Thenthe spring is released and allowed to push the disks outward.Consider the situation where disk 1 comes to a momentary haltshortly after the spring is released. Assuming thatm1 = 1.8kg,m2 = 3.2 kg, and v0 =6.0 m/s, find the velocity of disk2 at that moment _____________m/s

Explanation / Answer

Momentum conservation: Pi = (m1 +m2)v0          Pf =m1. 0 + m2. v2 Pi =Pf                    (m1+m2)v0 = m2.v2                                                v2     =      (m1+m2)v0 / m2    =   9.375 m/s

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