Accepted characters : numbers, decimal point markers (period or comma), sign ind
ID: 2145329 • Letter: A
Question
Accepted characters: numbers, decimal point markers (period or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000), "E" or "e" (used in scientific notation). NOTE: For scientific notation, a period MUST be used as the decimal point marker.
Complex numbers should be in the form (a + bi) where "a" and "b" need to have explicitly stated values.
For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is valid whereas {9i} is not.
Suppose that a meter stick is balanced at its center. A 0.24 kg mass is then positioned at the 6-cm mark. At what cm mark must a 0.35 kg mass be placed to balance the 0.24 kg mass?
Explanation / Answer
balancing moment (r x F) about centre point
0.24g x (0.50 - 0.06) = 0.35gd
d = 0.302 m
so x = 0.50 + d = 0.802 m or 80.2 cm mark