An Olympic speed skater increases her velocity from Vi =6.54 m/s to Vf=9.19 m/s over a period of 5.2 seconds while skating around a curve with a 20m radius. What is the magnitude of her centripetal  acceleration at the end of this acceleration? What is the magnitude of her tangential acceleration over this 5.2 second period?

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A: Given   Radius r=2m Total acceleration →a= 2m/s2 θ=30°

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A: Centripetal acceleration = v2 /r

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A: Given Centirpeta acceleration (ac)= 20.0 g = 20.0  x 9.81 = 196.2 m/s2 Radius (r) = 9.5 m

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A: Given: radial acceleration (ar) = 0.6 g Speed (V)=103 m/s Calculate the radius R of the turn.

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A: R = 2M →a = 20m/s2 θ=30°

Q: Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the track is a…

A: Radius of track (r) = 57 m Constant speed (v) = 29.5 ms

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A: Given r=187 m (radius of space station) ac=2.8g=2.8*9.8=27.44 m/s2 (centripetal acceleration)

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.