[单选题]
A wheel of moment of -h2g1e. s m;edk uxjoht3d( ucg u713yq+z.wjinerti(epzd65a 1 toia of $5.00 \; kgm^{2}$ starts from rest and accelerates under a constant torque of 3.00 Nm for 8.00 s. What is the wheel's rotational kinetic energy at the end of 8.00 s?
A. $57.6 \; J$
B. $64.0 \; J$
C. $78.8 \; J$
D. $122 \; J$
Post time 2024-1-22 02:51:16