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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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
Transcribed Image Text:**Description of Playground Equipment: Giant Stride**
The image depicts an advertisement for a vintage piece of playground equipment known as a Giant Stride. This equipment was popular in the past and was present at many elementary schools. The Giant Stride featured chains with handles attached to a central pole, allowing children to run in circles and lift off the ground as they moved horizontally.
**Physics of the Giant Stride**
When using the Giant Stride, children hold onto chains that are free to rotate around the pole. As they move in a circular path, they can achieve a speed that allows them to become airborne. A common physics question related to this involves calculating the linear speed of a child when the chain she grips forms an angle of 35 degrees with the vertical. For the purpose of this calculation, the chain is assumed to be 4 meters long.
**Image Details**
The image shows several children using the Giant Stride. The advertisement mentions the price for "Head Complete with 6 Ladders, Any Type — No Pipe" as $26.75, and the cost for a "Supporting Post, Painted" as $15.25. These components were part of the overall structure necessary to set up the Giant Stride.
This description provides historical insight into the types of playground equipment used in the past and introduces an interesting physics problem related to angular motion and forces.
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- 1. If both the mass and speed of an object are doubled while the radius is decreased by 4x, then the centripetal force is? 2. A 5 kg object has a kinetic energy of 90 Joules. What is the speed of this object? 3. The momentum of a 500 g object is 2000 kg m/s. What is the speed of this object? 4. A ball is thrown straight upward at an initial speed of 70 m/s. What is the acceleration of the object after 13 seconds? 5. An object is thrown straight upward with a speed of 90 m/s. What is the speed of the object after 13 seconds?arrow_forwardA roller coaster includes a long ramp that leads into a Loop-D-Loop. A carriage starts from rest at the top of the ramp and rolls downward (the system is frictionless) The value of gravitational acceleration is 4.8m/s, The mass of the carriage is 80kg, The initial height of the carriage is 5, and the radius of the Loop-D-Loop 10m 1. a) Draw a photo of the carriage at the top of the ramp, and another at the top of the Loop. b)Calculate the velocity of the carriage at the top of the Loop-D-Loop?arrow_forwardSuppose that humans have created a colony outside of our solar system on a planet called Wfirst21. Wfirst21 has a mass of 1.45×1025 kg and a day that lasts 24.1 h (which defines the rotational period of the planet). The colony is located on the planet's equator. The colonists set up a communications satellite which orbits Wfirst21. The satellite has a circular orbit that keeps it positioned directly above the colony. Calculate the radius ?r of the satellite's orbit in kilometers.arrow_forward
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