Author Question: A tightrope walker walks across a 30-m long wire tied between two poles. The center of the wire is ... (Read 488 times)

vinney12 · **on:** Jul 29, 2018

A tightrope walker walks across a 30-m long wire tied between two poles. The center of the wire is displaced vertically downward by 1.0 m when he is halfway across.

If the tension in both halves of the wire at this point is what is the mass of the tightrope walker? Neglect the mass of the wire. A) 85 kg
B) 43 kg
C) 74 kg
D) 91 kg

Question 2

Calculate the light intensity 1.45 m from a light bulb that radiates 100 W equally in all directions.

A) 3.78 W/m2
B) 4.36 W/m2
C) 47.6 W/m2
D) 54.7 W/m2