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14 Nov 2019
Estimate the force a person must exert on a string attached toa0.150 kg ball to make the ball revolve ina circle when the lengthof the string is 0.600 m. The ball makes1.20 revolutions persecond. Do not ignorethe weight of the ball. In particular, findthe magnitude ofFT, and the angle? it makeswith the horizontal. [Hint: Set thehorizontal componentof FT equal tomaR;also, since there is no vertical motion,what can you say about thevertical component ofFT?]
FT = 1 N ? = 2°
Estimate the force a person must exert on a string attached toa0.150 kg ball to make the ball revolve ina circle when the lengthof the string is 0.600 m. The ball makes1.20 revolutions persecond. Do not ignorethe weight of the ball. In particular, findthe magnitude ofFT, and the angle? it makeswith the horizontal. [Hint: Set thehorizontal componentof FT equal tomaR;also, since there is no vertical motion,what can you say about thevertical component ofFT?]
| FT | = 1 N |
| ? | = 2° |
Hubert KochLv2
26 Jan 2019
