Assertion(A): Spring balances show incorrect readings after using for a long time.Reason(R): On using for a long time, springs in the balances lose their elastic strength

When you put an object on a spring balance, what do you measure ?

A student carried out an investigation to determine the spring constant of a spring. Table 1 gives the data obtained by the student. Table 1 Force in N Extension in cm 0 0.0 2 3.5 4 8.0 6 12.5 8 16.0 10 20.0 0 2 . 1 Describe a method the student could have used to obtain the data given in Table 1. Your answer should include any cause of inaccuracy in the data. Your answer may include a labelled diagram. [6 marks] loading

HOOKE’S LAWthe extension of a spring is in direct proportion withthe load added to it

A 20 N metal block suspended by a spring balance. A beaker containing some water is placed on a weighing machine which reads 32 N. The spring balance is now lowered so that the block gets immersed in the water. The spring balance now reads 16 N. The reading of the weighing machine will be

taking moment about spring B, explain why is the tension in spring B not considered for the calculation