Physics

Problem

Three identical coins move in uniform circular motion on three different rotating platforms. • Coin P: radius

0.20\,\text{m}

, frequency

3.0\,\text{rev}\,/\,\text{s}

• Coin Q: radius

0.40\,\text{m}

, frequency

2.0\,\text{rev}\,/\,\text{s}

• Coin R: radius

0.10\,\text{m}

, frequency

4.0\,\text{rev}\,/\,\text{s}

Rank the magnitudes of the coins’ centripetal accelerations. a)

a_Q > a_P > a_R

a_R > a_P > a_Q

a_P > a_Q = a_R

a_Q = a_R > a_P