Consider the two pucks moving on a flat, icy surface. The pucks are connected by a cord of length e. At timet = 0, a force F starts to pull the center of the cord to the right. At time t, the two pucks collide and stick together. At this time, the force has moved through a distance d, and the pucks have attained a speed v (position (b) in the figure). Assume the pucks have equal mass m, are initially at rest, the surface is frictionless, and that the cord's mass can be neglected. m dCM F m t= 0 a (a) What is v in terms of F, d, l, and m? V = (b) How much of the energy transferred into the system by work done by the force has been transformed to internal energy? (Use the following as necessary: F, d, e, and m.) DEins
Consider the two pucks moving on a flat, icy surface. The pucks are connected by a cord of length e. At timet = 0, a force F starts to pull the center of the cord to the right. At time t, the two pucks collide and stick together. At this time, the force has moved through a distance d, and the pucks have attained a speed v (position (b) in the figure). Assume the pucks have equal mass m, are initially at rest, the surface is frictionless, and that the cord's mass can be neglected. m dCM F m t= 0 a (a) What is v in terms of F, d, l, and m? V = (b) How much of the energy transferred into the system by work done by the force has been transformed to internal energy? (Use the following as necessary: F, d, e, and m.) DEins
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Transcribed Image Text:Consider the two pucks moving on a flat, icy surface. The pucks are connected by a cord of length l. At time t = 0, a force F starts to pull the center of the cord to the right.
At time t, the two pucks collide and stick together. At this time, the force has moved through a distance d, and the pucks have attained a speed v (position (b) in the figure).
Assume the pucks have equal mass m, are initially at rest, the surface is frictionless, and that the cord's mass can be neglected.
dCM
F
F
m
t= 0
t= t
(a) What is v in terms of F, d, l, and m?
V =
(b) How much of the energy transferred into the system by work done by the force has been transformed to internal energy? (Use the following as necessary: F, d, e, and
m.)
ΔΕ,
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int
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