If the margin requirement is 2% and you want to open a position worth $50,000, you can calculate the required capital in your trading account by multiplying the position size by the margin percentage. In this case, you would take 2% of $50,000, which is calculated as follows: 

Required Capital=Position Size×Margin Requirement

Required Capital=50,000×0.02=1,000Required Capital=50,000×0.02=1,000

Therefore, you would need $1,000 in your trading account to open a position worth $50,000 with a 2% margin requirement. This amount serves as the collateral for the leveraged position you are taking in the forex market.