1. A student ties two rocks together with a lightweight 48.0 cm string. She takes a second string of length 30.0 cm and ties it to one of the rocks. She then swings the rocks around in a horizontal circle with that second, inner string. The inner rock has a mass of 84.0 g and the outer rock has a mass of 60.0 g. Her friend times the motion with a stopwatch as the rocks move together at a constant speed. They complete 10 revolutions in 13.8 s. Find the tension force exerted by each string as the rocks are moving at a constant speed. Top view 48.0 cm 30.0 cm mi m2

1. A student ties two rocks together with a lightweight 48.0 cm string. She takes a second string of length 30.0 cm and ties it to one of the rocks. She then swings the rocks around in a horizontal circle with that second, inner string. The inner rock has a mass of 84.0 g and the outer rock has a mass of 60.0 g. Her friend times the motion with a stopwatch as the rocks move together at a constant speed. They complete 10 revolutions in 13.8 s. Find the tension force exerted by each string as the rocks are moving at a constant speed. Top view 48.0 cm 30.0 cm mi m2

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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Concept explainers

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.

Question

1. A student ties two rocks together with a lightweight 48.0 cm string. She takes a second
string of length 30.0 cm and ties it to one of the rocks. She then swings the rocks around in
a horizontal circle with that second, inner string. The inner rock has a mass of 84.0 g and
the outer rock has a mass of 60.0 g. Her friend times the motion with a stopwatch as the
rocks move together at a constant speed. They complete 10 revolutions in 13.8 s.
Find the tension force exerted by each string as the rocks are moving at a constant speed.
Top view
48.0 cm
30.0 cm
mi
m2

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