Hence, we use a simple machine called a pulley to remove a huge rock that has blocked the road after a landslide. A pulley is capable of doing heavy work. A pulley is a simple machine made of a wheel with a Shaft around its rim and a rope passing through the shaft, which is used to lift heavy objects.
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Hence, we use a simple machine called a pulley to remove a huge rock that has blocked the road after a landslide. A pulley is capable of doing heavy work. A pulley is a simple machine made of a wheel with a Shaft around its rim and a rope passing through the shaft, which is used to lift heavy objects.
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