Physics, 14.04.2020 19:09 Dkhaurithompson
To make a pendulum, a 210 g ball is attached to one end of a string that has a length of 1.2 m and negligible mass. (The other end of the string is fixed.) The ball is pulled to one side until the string makes an angle of 24° with the vertical; then (with the string taut) the ball is released from rest. Find (a) the speed of the ball when the string makes an angle of 12° with the vertical and (b) the maximum speed of the ball. (c) What is the angle between the string and the vertical when the speed of the ball is one-third its maximum value?
Answers: 3
, b) 
, c) 
![\frac{1}{2}\cdot m \cdot v^{2} = m\cdot g \cdot L \cdot [(1-\cos \theta_{1})-(1 -\cos \theta_{2})]](/tpl/images/0598/8189/05f66.png)
. The solution is approximately:
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To make a pendulum, a 210 g ball is attached to one end of a string that has a length of 1.2 m and n...
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