1.

In an experiment to establish the relationship between weight of a rectangular wooden block lying on a horizontal table and the minimum force required to just move it using a spring balance, the least count of the spring balance used is 0.5 gwt.  When the wooden block started moving the pointer was at 56 mark.  The force at this point is : (a)        5.6 gwt                                                (b)        28 gwt(c)        2.8 gwt                                                (d)       44 gwt​

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