length and charge q. Assume that you can measure time, but charge, cannot. You want to find an expression for q by measuring periods for the cases where electric field E switched off (To) and on (TE). For this purpose, b) Electric field is switched on. Write the electric force on the charge F and find the downward acceleration (a). Do not forget to consider the directions; 1 b) Question 1 part b (second part of question 1) F =qE, a = g +1 qE m Option 3 qE F =qE, a = -- m E Option 1 F = -qE, a = g (+q F=-qE, a = - = -(g+¹5)
length and charge q. Assume that you can measure time, but charge, cannot. You want to find an expression for q by measuring periods for the cases where electric field E switched off (To) and on (TE). For this purpose, b) Electric field is switched on. Write the electric force on the charge F and find the downward acceleration (a). Do not forget to consider the directions; 1 b) Question 1 part b (second part of question 1) F =qE, a = g +1 qE m Option 3 qE F =qE, a = -- m E Option 1 F = -qE, a = g (+q F=-qE, a = - = -(g+¹5)
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Transcribed Image Text:Consider a simple pendulum with known mass m and unknown
length I and charge q. Assume that you can measure time, but
charge, cannot. You want to find an expression for q by
measuring periods for the cases where electric field E switched
off (To) and on (TE). For this purpose,
b) Electric field is switched on. Write the electric force on the
charge F and find the downward acceleration (a). Do not
forget to consider the directions;
1 b) Question 1 part b (second part of question 1)
F =qE, a = g +
Option 3
F=qE, a = -
qE
m
qE
m
'I'
(+q
Option 1
E
F =-qE, a = g
F=-qE, a = -
(g+ ab)
m
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