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zainy199
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Question #1)
In a new bungee sport a 70 kg rider is projected from the shore, out into a lake for a splash with a human scale slingshot. The stretched slingshot is made with a set of 50 cylindrical rubber tubes 1) stretched at a 45 degree angle from the horizontal. The tubes are cylindrical, having a 1cm outside diameter and a 0.5cm inside diameter. They are stretched from a 10 meter loose length back by an additional 15 meters and released accelerating the rider. Y of rubber = (1.0x10^6 pa) . Consider the accelerated rider.
a) Find the net force on the rider upon release.
b) Find the maximum height of the rider in his flight out into the water.
Question #2)
A 14 Kg door is pulled shut using tension in a rope. The rope is fixed to the door, 10cm from the hinge. The rope passes over a pulley and extends down a 2Kg hanging mass. The mass falls at a nearly constant speed, falling a total of 10cm during the 5 seconds to pull the door through a 90 degree rotation from fully open to fully shut. Find the angular acceleration of the door when the rope is at a 45 degree angle from the doors surface. You may consider the shutting door as a mass of 14Kg pivoting 60 cm from the hinge
In a new bungee sport a 70 kg rider is projected from the shore, out into a lake for a splash with a human scale slingshot. The stretched slingshot is made with a set of 50 cylindrical rubber tubes 1) stretched at a 45 degree angle from the horizontal. The tubes are cylindrical, having a 1cm outside diameter and a 0.5cm inside diameter. They are stretched from a 10 meter loose length back by an additional 15 meters and released accelerating the rider. Y of rubber = (1.0x10^6 pa) . Consider the accelerated rider.
a) Find the net force on the rider upon release.
b) Find the maximum height of the rider in his flight out into the water.
Question #2)
A 14 Kg door is pulled shut using tension in a rope. The rope is fixed to the door, 10cm from the hinge. The rope passes over a pulley and extends down a 2Kg hanging mass. The mass falls at a nearly constant speed, falling a total of 10cm during the 5 seconds to pull the door through a 90 degree rotation from fully open to fully shut. Find the angular acceleration of the door when the rope is at a 45 degree angle from the doors surface. You may consider the shutting door as a mass of 14Kg pivoting 60 cm from the hinge