•• 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
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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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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