•• A squirrel-proof bird feeder has a lever that closes to protect theseeds when a 0.42-kg squirrel sits on it, but not when a 0.077-kgbird perches there. (a) If the lever radius is 9.6 cm, what torquesdo the squirrel and the bird each exert on it? (b) The torque produced by the animal is balanced by a spring that applies a perpendicular force a distance of 3.5 cm from the axis of rotation. Ifthe squirrel must stretch the spring 2.5 cm in order to close thelever and protect the seeds, what should be the force constant ofthe spring
•• A squirrel-proof bird feeder has a lever that closes to protect theseeds when a 0.42-kg squirrel sits on it, but not when a 0.077-kgbird perches there. (a) If the lever radius is 9.6 cm, what torquesdo the squirrel and the bird each exert on it? (b) The torque produced by the animal is balanced by a spring that applies a perpendicular force a distance of 3.5 cm from the axis of rotation. Ifthe squirrel must stretch the spring 2.5 cm in order to close thelever and protect the seeds, what should be the force constant ofthe spring
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter10: Rotational Motion
Section: Chapter Questions
Problem 10CQ
Related questions
Question
•• A squirrel-proof bird feeder has a lever that closes to protect the
seeds when a 0.42-kg squirrel sits on it, but not when a 0.077-kg
bird perches there. (a) If the lever radius is 9.6 cm, what torques
do the squirrel and the bird each exert on it? (b) The torque produced by the animal is balanced by a spring that applies a perpendicular force a distance of 3.5 cm from the axis of rotation. If
the squirrel must stretch the spring 2.5 cm in order to close the
lever and protect the seeds, what should be the force constant of
the spring
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