[填空题]
A 55-kg person riding a bike pz(id0w 0 v1r*a gotb3outs alob(*hvz rqc rjzo*h2qge(.:0l her weight on each pedal when climbing a hill. The pedals rotate in a circle of radius 17 cmb zo:qzcrh** g(rq ve( 0j.ho2. (a) What is the maximum torque she exerts? $m \cdot N$ (b) How could she exert more torque?