An Iron weight, suspended by a string, is motionless. The tension in the string is 4,75 newtons What is the mass of the iron weight?

A 0.485 kilograms

4.75 kilograms

C 9.65 kilograms

OD 10.0 kilograms

15,5 kilograms

Answer: A

0.485 Kg

Explanation:

Since the iron weight is motionless, the magnitude of tension T in the string will be equal but opposite to the magnitude of the weight W.

T = W

Where W = mg

T = mg

Where T = 4.75 N, g = 9.81m/s^2

4.75 = 9.81m

m = 4.75/9.81

m = 0.485 Kg

Therefore, the mass of the iron weight is approximately 0.485 kg