A uniform metal rod of length 80cm and mass 3.2kg is supported by horizontally by the two vertical springs balance C and I D.balance C is 20cm from one end while balance D is 30cm from the other end find the reading on each balance

Answer 1

C+D = 3.2
20 C + 50 D = 40 * 3.2

20 (3.2-D) + 50 D = 128
30 D = 64
D =2.13
C = 3.2 - 2.13 = 1.07