Physics

Problem

A brake system uses a master cylinder of diameter

1.0\,\text{cm}

and a wheel cylinder of diameter

2.0\,\text{cm}

. If the brake pad connected to the wheel cylinder must advance

0.5\,\text{mm}

to grip the disc, how far must the master cylinder piston move? a)

1.0\,\text{mm}

2.0\,\text{mm}

0.25\,\text{mm}

0.5\,\text{mm}