Three students $A, B$ and $C$ were performing an experiment to establish the relation between the weight of a wooden block and the minimum force required to just move it on a horizontal surface. The experimental setup used by each is as shown in the figures given below.
The result obtained by them will be:
The result obtained by them will be:
- Asame for each
- Bmost accurate for $A$
- Cmost accurate for $B$
- Dmost accurate for $C$
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