A wet towel of mass 4 kg is hung in the center of a 6 m clothesline, so that the line makes an angle 10o with the horizontal. The tension in the line is closest to...

Question

A wet towel of mass 4 kg is hung in the center of a 6 m clothesline, so that the line makes an angle 10o with the horizontal. The tension in the line is closest to...
50N, 40N, 100N, 200N, or 10N

bobpursley · Answer

each half of the closline supports 2kg draw the triangle: sin10=2g/tension tension=about 20/sin10=20/(10/57) using the small angle approximation tension=114/10= about 10 N