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Sagot :
The middle of the hoop travels 46.4m in that time. A hoop with a radius of 65 cm and a mass of 1.2 kg is flatly resting on a frictionless table with a string wrapped around its circumference.
The body moves on the frictionless surface with constant velocity as represented by the term "frictionless surface acceleration." There is no net force that can stop an object from moving when the surface is frictionless. As a result, the body maintains its current speed. We translate "frictionless" as "moving without stopping" for this reason. A physical body's mass is its total amount of matter.
F = ma
F=1.2*a 7=1.2*a a =7/1.2 a = 5.8 m/s
2 s = ut+1/2at^
2\ss = 1/2(5.8)(16) (16)
s = 46.4m
Learn more about frictionless here
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