A $4.00 \mathrm{~kg}$ Mass Is Moving in a Circular Path of Radius

Multiple Choice

A $4.00 \mathrm{~kg}$ mass is moving in a circular path of radius $2.50 \mathrm{~m}$ with a constant angular speed of $5.00 \mathrm{rad} / \mathrm{sec}$ . The magnitude of the radial force on the mass is

A) $250 \mathrm{~N}$ .
B) $107 \mathrm{~N}$ .
C) $94.0 \mathrm{~N}$ .
D) $153 \mathrm{~N}$ .
E) $185 \mathrm{~N}$ .