Suppose you touched a pith ball suspended from an insulating stringto a charged Teflon rod. You then made a second pith ball touch thefirst one with no other objects near by. You then put the top ofthe strings next to each other as shown at right. The two pithballs would be separated by 2 cm. The mass of each pith ball is 0.1g and the length of each of the string is 20 cm. (ignore the massof the strings)
a) What is the magnitude is the electrostatic force on one of thepith balls? You can assume that angle with vertical is small sothat sinÎ â Î.
F = ___________N (For this problem I dont understand how to set itup because I do not think that I know the q value so I cannot seehow to do the calculation)
b) Assuming the two balls are point charges at the end of thestrings calculate the magnitude of the charge on one of theballs.
Q= ______________ C
Suppose you touched a pith ball suspended from an insulating stringto a charged Teflon rod. You then made a second pith ball touch thefirst one with no other objects near by. You then put the top ofthe strings next to each other as shown at right. The two pithballs would be separated by 2 cm. The mass of each pith ball is 0.1g and the length of each of the string is 20 cm. (ignore the massof the strings)
a) What is the magnitude is the electrostatic force on one of thepith balls? You can assume that angle with vertical is small sothat sinÎ â Î.
F = ___________N (For this problem I dont understand how to set itup because I do not think that I know the q value so I cannot seehow to do the calculation)
b) Assuming the two balls are point charges at the end of thestrings calculate the magnitude of the charge on one of theballs.
Q= ______________ C
