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# A small sphere with mass 1.50 g hangs by a thread between

ISBN: 9780321675460 31

## Solution for problem 68P Chapter 23

University Physics | 13th Edition

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Problem 68P

A small sphere with mass 1.50 g hangs by a thread between two parallel vertical plates apart (Fig. P23.62). The plates are insulating and have uniform 5.00 cm

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Solution 68P To understand the situation, let us have a look at the following figure. Various forces and their components are shown in the figure above. Let T be the tension in the thread. Its vertical component Tcos 30 will balance the weight of the sphere, whereas the horizontal component Tsin 30 0 will balance the electric force due to the charge. 0 Therefore, Tsin 30 = qE …..(1) 0 Tcos 30 = mg …..(2) ( mg is the weight of the sphere) Dividing equation (1) by...

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