Unformatted text preview: frequency
collision? (b) By how much does the period change?
The sum oes the energy change? pivot point for
(c) By how much dof the torques about the(d) Account at equilibrium (θ = 0) is given by considering the
weight of the
the change in energy. plank acting about its center of mass and the restoring force of the spring. The plank
63. A simple may be treated as length of 2.23 m and a L/ass of the pivot point, while the spring force acts at
pendulum with a a point mass a distance m 2 from
6.74 kg isagdistance initial equilibrium, the net at its equilib-be zero.
iven an L. At speed of 2.06 m/s torque must
rium position. Assume it undergoes simple harmonic
motion, and determine img a)L eriod, (L = otal energy, and
τ = − ts ( p + kxo b) t 0
(c) maximum angular displacement.
64. Review problem. xone end of a light spring with force conO=
stant 100 N/m is attached to a vertical wall. A light string is
When a block of mass M, connected to the en
tied to the other end of the horizontal spring. The string
spring of mass ms 7.40 g...
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