a at 90. km/h? 3. A person tries to lift a 70. kg rock by applying an upward force of 500. N, but is una Calculate how much additional force is needed to be able to lift the rock from the g 4. A crane is used to hoist a load of mass m₁ = 500. kg. The load is suspended by a cable from a hook of mass m₂ = 50. kg. The load is lifted upward at a constant acceleration of 2.0 m/s². Determine (a) the tension, T₁, in the lower cable and (b) the tension, T2, in the upper cable.
a at 90. km/h? 3. A person tries to lift a 70. kg rock by applying an upward force of 500. N, but is una Calculate how much additional force is needed to be able to lift the rock from the g 4. A crane is used to hoist a load of mass m₁ = 500. kg. The load is suspended by a cable from a hook of mass m₂ = 50. kg. The load is lifted upward at a constant acceleration of 2.0 m/s². Determine (a) the tension, T₁, in the lower cable and (b) the tension, T2, in the upper cable.
College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter5: Energy
Section: Chapter Questions
Problem 63AP: A person doing a chin-up weighs 700 N, exclusive of the arms. During the first 25.0 cm of the lift,...
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