5) A yo-yo of mass 100 g is spun in a vertical circle at the end of a 0.8 m stri
ID: 2186738 • Letter: 5
Question
5) A yo-yo of mass 100 g is spun in a vertical circle at the end of a 0.8 m string at a constant angular velocity of 5 rads/s. Calculate a) the tension in the string at the top of its trajectory, b) the tension in the string at the bottom of the trajectory.
6) The same yo-yo as in the previous problem is spun in a horizontal circle, as shown in the figure. If the
string makes an angle of 30 degrees to the vertical, what is the period of rotation?
5) A yo-yo of mass 100 g is spun in a vertical circle at the end of a 0.8 m string at a constant angular velocity of 5 rads/s. Calculate a) the tension in the string at the top of its trajectory, b) the tension in the string at the bottom of the trajectory. 6) The same yo-yo as in the previous problem is spun in a horizontal circle, as shown in the figure. If the string makes an angle of 30 degrees to the vertical, what is the period of rotation?Explanation / Answer
at the top position T=mw^2r-mg =1.019 N at the bottom position T=mw^2+mg=2.981 N for the next problem Tsin(angle)=mw^2r=2 t=4N
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