The diagram above illustrates a uniform metre rule which is balanced on a pivot by some masses. Calculate the value of M
Attached Figure / Diagram
A
500.0g
B
400.0g
C
44.4g
D
25.0g
Verified Correct Answer: D.
Physical Principles & Numerical Solution
clockwise moment = Anti-clock wise moment
= M x 40 = 100 x 10
M = \(\frac{1000}{40}\)
= 25g
Source: Myschool Past Questions Archive (Record #35746)