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Two painters are working from a wooden board 5 m long suspended from the top of a building by two ropes attached to the ends of the plank. Either rope can withstand a maximum tension of 1040 N. Painter  of mass 80 kg is working at a distance of 1 m from one end. Painter  of mass 60 kg is working at a distance of m from the centre of mass of the board on the other side. Take mass of the board as 20 kg and . The range of so that both the painter can work safely is

a)

b)

c)

d)


Question ID - 100080 | SaraNextGen Answer

Two painters are working from a wooden board 5 m long suspended from the top of a building by two ropes attached to the ends of the plank. Either rope can withstand a maximum tension of 1040 N. Painter  of mass 80 kg is working at a distance of 1 m from one end. Painter  of mass 60 kg is working at a distance of m from the centre of mass of the board on the other side. Take mass of the board as 20 kg and . The range of so that both the painter can work safely is

a)

b)

c)

d)

1 Answer - 5876 Votes

3537

Answer Key : (c) -

(c)

For vertical equilibrium,

Take moment about

and

For safe working, and

and ,so the range is



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