The figure shows a ball with mass m = 0.471 kg attached to the end of a thin rod with length L = 0.582 m and negligible mass. The other end of the rod is pivoted so that the ball can move in a vertical circle. The rod is held horizontally as shown and then given enough of a downward push to cause the ball to swing down and around and just reach the vertically upward position, with zero speed there. How much work is done on the ball by the gravitational force from the initial point to (a) the lowest point, (b) the highest point, and (c) the point on the right level with the initial point? If the gravitational potential energy of the ball-Earth system is taken to be zero at the initial point, what is it when the ball reaches (d) the lowest point, (e) the highest point, and (f) the point on the right level with the initial point? L

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Chapter1: Units, Trigonometry. And Vectors
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The figure shows a ball with mass m = 0.471 kg attached to the end of a thin rod with length L = 0.582 m and negligible mass. The other
end of the rod is pivoted so that the ball can move in a vertical circle. The rod is held horizontally as shown and then given enough of a
downward push to cause the ball to swing down and around and just reach the vertically upward position, with zero speed there. How
much work is done on the ball by the gravitational force from the initial point to (a) the lowest point, (b) the highest point, and (c) the
point on the right level with the initial point? If the gravitational potential energy of the ball-Earth system is taken to be zero at the
initial point, what is it when the ball reaches (d) the lowest point, (e) the highest point, and (f) the point on the right level with the initial
point?
Transcribed Image Text:The figure shows a ball with mass m = 0.471 kg attached to the end of a thin rod with length L = 0.582 m and negligible mass. The other end of the rod is pivoted so that the ball can move in a vertical circle. The rod is held horizontally as shown and then given enough of a downward push to cause the ball to swing down and around and just reach the vertically upward position, with zero speed there. How much work is done on the ball by the gravitational force from the initial point to (a) the lowest point, (b) the highest point, and (c) the point on the right level with the initial point? If the gravitational potential energy of the ball-Earth system is taken to be zero at the initial point, what is it when the ball reaches (d) the lowest point, (e) the highest point, and (f) the point on the right level with the initial point?
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