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Please help me check these two questions   A ball starts rolling down a cramp.  is the value change in its kinetic energy zero or positive

Please help me check these two questions   A ball starts rolling down a cramp.  is the value change in its kinetic energy zero or positive

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Please help me check these two questions

 

A ball starts rolling down a cramp. 

is the value change in its kinetic energy zero or positive

A spaceship has a rotating compartment which gives its passengers artificial gravity. Suppose this compartment is a cylinder with a radius of 10.7 m. In order for the artificial gravity to be the same strength as what is experienced on Earth's surface, what would the period of rotation of this compartment need to be, in seconds?
Transcribed Image Text:A spaceship has a rotating compartment which gives its passengers artificial gravity. Suppose this compartment is a cylinder with a radius of 10.7 m. In order for the artificial gravity to be the same strength as what is experienced on Earth's surface, what would the period of rotation of this compartment need to be, in seconds?
The radial acceleration of the space station a=tw² We can that the acceleration of the space station say equal to gravity for a particular rotation of period Thus, The angular speed 9.8 w² = 2 w = √²417m = 0.957 rad/s 2 Thus, The period of rotation 211 T = 0.957 = 6.56 s Therefore the period of rotation is 6.56 S 15
Transcribed Image Text:The radial acceleration of the space station a=tw² We can that the acceleration of the space station say equal to gravity for a particular rotation of period Thus, The angular speed 9.8 w² = 2 w = √²417m = 0.957 rad/s 2 Thus, The period of rotation 211 T = 0.957 = 6.56 s Therefore the period of rotation is 6.56 S 15
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