[填空题]
A 55-kg person ridintdadxs3dg1* r b1 np*+ vr p.ogr)w;*u4;qhq lg a bike puts all her weight on each pedal when climbing a hill. The pedals rotate in a circle of rav o4r.)*lq p wuqgr;;hdius 17 cm.
(a) What is the maximum torque she exerts? $m \cdot N$
(b) How could she exert more torque?
