A container consists of two vertical cylindrical columns of different diameter connected by a narrow horizontal section,as shown in the figure.The open faces of the two columns are closed by very light plates that can move up and down without friction.The tube diameter at A is 35.0 cm and at B it is 10.2 cm.This container is filled with oil of density 0.820 g/cm3.If a 125-kg object is placed on the larger plate at A,how much mass should be placed on the smaller plate at B to balance it? 
Definitions:
Subsidiary Ledger
A Subsidiary Ledger is a ledger containing all details of transactions for a specific account, which then summarizes into a single line in the General Ledger.
Work In Process Inventory
Goods that are in the process of being manufactured but are not yet completed, representing a component of a company's inventory.
Finished Goods Inventory
Items that have been completed by the manufacturing process and are ready for sale to customers.
Control Accounts
General ledger accounts that summarize the balances of a group of subsidiary accounts, facilitating the organization and verification of financial information.
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