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Question
A simple balance has two pans suspended from the ends of arms of equal length. When it is balanced, the pointer is at 0. Four masses in total are placed on the pans, with one or more on pan X and the rest on pan Y. Which combination of masses can be used to balance the pans?
A simple balance has two pans suspended from the ends of arms of equal length. When it is balanced, the pointer is at 0. Four masses in total are placed on the pans, with one or more on pan X and the rest on pan Y. Which combination of masses can be used to balance the pans?
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Solution
The correct option is C 1g, 2g, 2g, 5g
Mass is measured by a physical balance or beam balance because the value of g (acceleration due to gravity) is same on both the pans. For balancing the pans 1g, 2g and 2g masses are required on pan X and 5g on pan Y. Thus, option C satisfies the combination of masses to balance the pans.
1g, 2g, 2g, 5g
Mass is measured by a physical balance or beam balance because the value of g (acceleration due to gravity) is same on both the pans. For balancing the pans 1g, 2g and 2g masses are required on pan X and 5g on pan Y. Thus, option C satisfies the combination of masses to balance the pans.
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