A miner has his camp at the top of a hill with a cliff behind his...

 

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A miner has his camp at the top of a hill with a cliff behind his camp. He has always had the problem of carrying his supplies up to his camp. The miner rigs a pulley at the top of the cliff and puts his supplies in a cart at the base of the hill, there is a frictional force between the cart and the incline of 20 N. He then holds onto the (ideal) rope attached to the cart and steps off the cliff. The hill has an incline of 30. The cart has a mass of 250 kg. The miner has a mass of 90 kg. The pulley has a mass of 100 kg and a radius of 1.2 m. 1. If the incline is 100 m long, how fast is he going when he reaches the bottom of the cliff? Physical situation A miner has his camp at the top of a hill with a cliff behind his camp. He has always had the problem of carrying his supplies up to his camp. The miner rigs a pulley at the top of the cliff and puts his supplies in a cart at the base of the hill, there is a frictional force between the cart and the incline of 20 N. He then holds onto the (ideal) rope attached to the cart and steps off the cliff. The hill has an incline of 30. The cart has a mass of 250 kg. The miner has a mass of 90 kg. The pulley has a mass of 100 kg and a radius of 1.2 m. 1. If the incline is 100 m long, how fast is he going when he reaches the bottom of the cliff? Physical situation