- #1

vaas44

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**1. Homework Statement**

A plastic shade cover is almost 290 ft in length and 150 ft in breadth. It is wrapped around a cylindrical wooden rod which is at a height of 7 ft from the ground. The cover is pulled by nylon/plastic ropes to the right to its complete length of 290 ft. Consider the thickness of plastic cover to be 10 mm and density of plastic as 850 kg/m^3. The ropes are pulled by 7 people towards right. Diameter of the wooden rod is 10 cm and density 650 kg/m^3.

How much total force is required to pull the cover completely to the right?

Please give views on an efficient pulley system to reduce the effort by 1/3.

A plastic shade cover is almost 290 ft in length and 150 ft in breadth. It is wrapped around a cylindrical wooden rod which is at a height of 7 ft from the ground. The cover is pulled by nylon/plastic ropes to the right to its complete length of 290 ft. Consider the thickness of plastic cover to be 10 mm and density of plastic as 850 kg/m^3. The ropes are pulled by 7 people towards right. Diameter of the wooden rod is 10 cm and density 650 kg/m^3.

How much total force is required to pull the cover completely to the right?

Please give views on an efficient pulley system to reduce the effort by 1/3.

## Homework Equations

**3. I tried calculating angular acceleration of the cylindrical rod and to further determine the exact force required to pull the cover to its full length.**