Imagine you are standing at the edge of a cliff whose height is , and holding a suspended rope with an object that has a mass of and a length of . Find the work done when you pull the rope from its initial position upto the top of the cliff.
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1. A 10 m long cable with a mass of 25 kg hangs from a hook. Find the work done in lifting the lower end of the chain (straight up) to hang from the same hook, as shown. Hint: Be careful with the distance di . 2. A heavy rope, 50 ft long and weighing 30 lbs hangs over the edge of a building. How much work is required to pull the rope to the top of the building?
2. A heavy rope, 50 ft long and weighing 30 lbs hangs over the edge of a building. How much work is required to pull the rope to the top of the building?
