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kramer
2 years ago
6

The speed that light travels :

Physics
2 answers:
Monica [59]2 years ago
6 0
The answer has to be <span>c.changes when going through different mediums</span>
OLga [1]2 years ago
4 0
I think it might be C.
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A 50-kg person stands 1.5 m away from one end of a uniform 6.0-m-long scaffold of mass 70.0 kg.
babymother [125]

Answer

given,

mass of the person, m = 50 Kg

length of scaffold = 6 m

mass of scaffold, M= 70 Kg

distance of person standing from one end = 1.5 m

Tension in the vertical rope = ?

now equating all the vertical forces acting in the system.

T₁ + T₂ = m g + M g

T₁ + T₂ = 50 x 9.8  + 70 x 9.8

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system is equilibrium so, the moment along the system will also be zero.

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now,

T₁ x 6 - mg x (6-1.5) - M g x 3 = 0

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6 T₁ = 50 x 9.8 x 4.5 + 70 x 9.8 x 3

6 T₁ = 4263

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