In which of the following balances, standard weights are not required? (1) Beam balance (2) Physical balance (3) Grocer's balance (4) Digital balance
Answers
Digital Balance does not require standard weights to measure weights.
Explanation:
• Weighing of an object was done earlier by comparing the object with an object of same weight.
• So, objects of specific weights are kept as standards and they were termed as standard weights.
• There are different mechanism to measure the weights of an object.
• They are by Beam balance, physical balance, grocer's balance and digital balance.
• In beam balance, two pans are kept above beam and the pans will move up and down when the weight of the object is not equal with the standard weights.
• In physical balance, the pointer will be attached to a rod whose two ends are connected with pans.
• The pointer will move towards the direction of the pan with higher weights.
• In Grocer's balance also, we need standard weights to compare the object with the standard object.
• But in digital balance, only the object is putted on the balance and the weight of it will be shown.
• So, digital balance is the one which does not require standard weights.