First slide

Static friction

Question

To avoid slippping while walking on ice, one should take smaller steps because of the

Moderate

A

friction on ice is large
B

larger normal reaction
C

friction of ice is small
D

smaller normal reaction

Solution

In the diagram shown, P is the force applied by the man on the ground and $Psin θ$ is the horizontal component of this force. As shown in the diagram, for smaller steps, $θ$ is small, so smaller frictional force (f) can balance $Psin θ$ .

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