Question

A student performed the experiment, To establish relationship between weight of a rectangular wooden block lying on a horizontal surface and minimum force required to just move it using a spring balance". If the weight of the given wooden block is nearly 200 g wt and three known weights of 100 g wt, each are to be successively placed on the wooden block to take three more readings, then which one of the following balances available in the laboratory would you select for the best results in the experiment ? It is known that a force of 90 g wt is required to just move the block on the surface.
(a) Range 0-100 g wt ; Least count 1.0 g wt.
(b) Range 0-200 g wt ; Least count 2.0 g wt.
(c) Range 0-250 g wt ; Least count 2.0 g wt.
(d) Range 0-500 g wt ; Least count 5.0 g wt.

CBSE Class IX Science VSA (1 Mark)

Answer 1

(c) Range 0-250 g wt ; Least count 2.0 g wt