A car is safely negotiating an unbanked circular turn at a speed of $17 \, \text{m/s}$ on dry road. However, a long wet patch in the road appears and decreases the maximum static frictional force to one-fifth of its dry-road value. If the car is to continue safely around the curve, by what factor would the it need to change the original velocity?

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A car is safely negotiating an unbanked circular turn at a speed of $17 \, \text{m/s}$ on dry road. However, a long wet patch in the road appears and decreases the maximum static frictional force to one-fifth of its dry-road value. If the car is to continue safely around the curve, by what factor would the it need to change the original velocity?(a) $$ \frac{1}{3}v $$
, (b) $$\frac{1}{2}v $$
, (c) $$\frac{2}{7}v $$
, (d) $$\frac{4}{9}v $$
, (e) $$ \frac{3}{8}v $$
:

Jason · Accepted Answer

See how Prof Phy solves this.

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