A 15.0-kg mass fastened to the end of a steel wire with an unstretched length of 0.650 m is whirled in a vertical circle with angular velocity 2.30 rev/s at the bottom of the circle. The cross-sectional area of -2 the wire is 1.00 × 10 cm².

A 15.0-kg mass fastened to the end of a steel wire with an unstretched length of 0.650 m is whirled in a vertical circle with angular velocity 2.30 rev/s at the bottom of the circle. The cross-sectional area of -2 the wire is 1.00 × 10 cm².

Classical Dynamics of Particles and Systems

5th Edition

ISBN:9780534408961

Author:Stephen T. Thornton, Jerry B. Marion

Publisher:Stephen T. Thornton, Jerry B. Marion

Chapter11: Dynamics Of Rigid Bodies

Section: Chapter Questions

Problem 11.30P

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Concept explainers

Rotational Equilibrium And Rotational Dynamics

In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics.

Equilibrium of Forces

The tension created on one body during push or pull is known as force.

Question

Calculate the elongation of the wire when the mass is at the lowest point of the path. (Young's modulus of steel is 2.0×10^11 Pa.)

A 15.0-kg mass fastened to the end of a steel wire
with an unstretched length of 0.650 m is whirled in
a vertical circle with angular velocity 2.30 rev/s at
the bottom of the circle. The cross-sectional area of
the wire is 1.00 × 10-2 cm².

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