Imagine a balance beam with unequal arms. An earring placed in the left basket was balanced by 4.93 g of standard masses on the right. When placed in the right basket, the same earring required 14.60 g on the left to balance.
(a) Which was the longer arm?
The left arm is longer
The right arm is longer
(b) What is the mass of the earring?
- Anonymous1 month agoFavorite Answer
m*L = 4.93*R -----> L/R = 4.93/m
m*R = 14.60*L -----> L/R = m/14.60
4.93/m = m/14.60
m² = 4.93*14.60 = 72.0
m = 8.48 g <---------- (b)
L/R = 8.48/14.60 < 1
so Right side is longer <------- (a)
- Anonymous1 month ago
longher arm is the right one
earring mass m = 4.93*14.60/4.93 = 14.60 grams