Persons A and B are standing on the opposite sides of a `3.5` m wide water stream which they wish to cross. Each one of them has a rigid wooden plank whose mass can be neglected. However, each plank is only slightly longer than 3 m. So they decide to arrange them together as shown in the figure schematically. With B (mass 17 kg) standing, the maximum mass of A, who can walk over the plank is close to A. 17 kgB. 65 kgC. 80 kgD. 105 kg

Persons A and B are standing on the opposite sides of a `3.5` m wide w

1.	Persons A and B are standing on the opposite sides of a `3.5` m wide water stream which they wish to cross. Each one of them has a rigid wooden plank whose mass can be neglected. However, each plank is only slightly longer than 3 m. So they decide to arrange them together as shown in the figure schematically. With B (mass 17 kg) standing, the maximum mass of A, who can walk over the plank is close to A. 17 kgB. 65 kgC. 80 kgD. 105 kg
Answer» Correct Answer - C

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