Question 5: A 0.15 kg rock tied to a 0.8 m long string is swung in a vertical circle. At the top of the circle, the rock

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Question 5 A 0 15 Kg Rock Tied To A 0 8 M Long String Is Swung In A Vertical Circle At The Top Of The Circle The Rock 1 (42.1 KiB) Viewed 25 times

Question 5: A 0.15 kg rock tied to a 0.8 m long string is swung in a vertical circle. At the top of the circle, the rock's highest point, it moves at a speed of 10.0 m/s. At the bottom of the circle, the rock's lowest point, it moves at a speed of 11.5 m/s. For each part below, be explicit about all vector directions. You may assume the positive x direction is to the right and the positive y direction is up. dp (a) What is the magnitude of at the rate of change of the rock's momentum, at the top of the circle? (b) What is the force exerted on the rock by the string when the rock is at the top of the circle? Start from a fundamental principle and show all work. You must draw a diagram of the forces acting on the rock to receive full credit. Express your answer as three-component vector. (c) What is the magnitude of the rate of change of the rock's momentum, at the bottom of the circle? (d) What is the force exerted on the rock by the string when the rock is at the bottom of the circle? Start from a fundamental principle and show all work. You must draw a diagram of the forces acting on the rock to receive full credit. Express your answer as three-component vector.