While performing an experiment to establish 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, a student calculated the minimum force required as 180 g wt, to move the wooden block of 400 g wt. If he places another block of mass 100 g wt over it, the force required will :
(a) remain same
(b) decrease
(c) increase
(d) may decrease or increase
CBSE Class IX Science VSA (1 Mark)
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(c) Force will increase.
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