8. Centripetal Forces & Gravitation
Centripetal Forces
8. Centripetal Forces & Gravitation Centripetal Forces
18PRACTICE PROBLEM
A child rotates a 75-g cube of side 3.0 cm tied to a light cord. The cube moves clockwise in a vertical circle of radius 0.5 m. At the position where the cube is moving straight up, the cube has a speed of 4.8 m/s. Calculate the strength of the total force applied to the cube. The cube is affected by air drag, and the cube drag coefficient is 1.15.
A child rotates a 75-g cube of side 3.0 cm tied to a light cord. The cube moves clockwise in a vertical circle of radius 0.5 m. At the position where the cube is moving straight up, the cube has a speed of 4.8 m/s. Calculate the strength of the total force applied to the cube. The cube is affected by air drag, and the cube drag coefficient is 1.15.