The diagram above illustrates a uniform metre rule which is balanced on a pivot by some masses. Calculate the value of M
-
A.
500.0g -
B.
400.0g -
C.
44.4g -
D.
25.0g
Correct Answer: Option D
Explanation
clockwise moment = Anti-clock wise moment
= M x 40 = 100 x 10
M = (frac{1000}{40})
= 25g