Question 191: Motion in 2D & Vectors

Question

A particle moves in a circle of radius 5 cm with constant speed and time period 0.2$$\pi $$ s. The acceleration of the particle is

Accepted Answer

Centripetal acceleration $${a_c} = {\omega ^2}r$$
$$ = {\left( {{{2\pi } \over T}} ight)^2}r$$
$$ = {\left( {{{2\pi } \over {0.2\pi }}} ight)^2} 	imes 5 	imes {10^{ - 2}} = 5$$ m/s
2

Answer

15 m/s
2

Answer

25 m/s
2

Answer

36 m/s
2

Answer

5 m/s
2

Motion in 2D & Vectors

A particle moves in a circle of radius 5 cm with constant speed and time period 0.2$\pi $ s. The acceleration of the particle is

Choose the correct answer: