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a stone is tied to the end of astring 100cm long is whirled in ahorizontal circle qith a constant speed . if the stone makes 20 revolution in 40s,what is the mag itude and direction of acceleration of the stone |
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Answer» Answer: 25 14
Hz Angular velocity ω=2πf= 25 2×14π
rad/s=3.52rad/s Acceleration is a=ω 2 r=3.52 2 ×0.8=9.9m/s 2
The direction is ALONG the radius at every point towards the centre. |
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