7.6.2 Reason PIVOTAL CIass |= 1.2 m A pendulum consisting of a light string and an object (mass 2 kg) is released from a horizontal position and swings down (see the figure at right). Find the speed of the object when the pendulum reaches the bottom of its swing (as shown by the dashed lines in the figure) using your knowledge of energy. Could you figure this out using kinematics? Why, or why not?
7.6.2 Reason PIVOTAL CIass |= 1.2 m A pendulum consisting of a light string and an object (mass 2 kg) is released from a horizontal position and swings down (see the figure at right). Find the speed of the object when the pendulum reaches the bottom of its swing (as shown by the dashed lines in the figure) using your knowledge of energy. Could you figure this out using kinematics? Why, or why not?
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Question
Transcribed Image Text:7.6.2 Reason
PIVOTAL Cass
1=1,2 m
A pendulum consisting of a light string and an object
(mass 2 kg) is released from a horizontal position and
swings down (see the figure at right). Find the speed
of the object when the pendulum reaches the bottom of
its swing (as shown by the dashed lines in the figure)
23
using your knowledge of energy.
Could you figure this out using kinematics? Why or why not?
Expert Solution
Step 1
At the horizontal position (initially) the pendulum has potential energy is zero. Since here the object is at rest, therefore, the kinetic energy will be zero.
When the pendulum reaches the bottom its potential energy becomes zero, and it has maximum kinetic energy.
Therefore, using conservation of energy
Where
v be defined as the velocity.
g be defined as the gravitational acceleration.
l be defined as the length of the string.
Step by step
Solved in 3 steps
