MCQ
While walking on ice, one should take small steps to avoid slipping. This is because smaller steps ensure:
- ALarger friction.
- ✓Smaller friction.
- CLarger normal force.
- DSmaller normal force.
✓
Answer
Correct option: B.
Smaller friction.
Explanation:
According to the first law of the limiting friction,
$\text{f}=\mu\text{N}$
where f is the frictional force
$\mu$ is the coefficient of friction
N is the normal reaction force
When we take smaller steps on ice, the normal reaction force exerted by the ice is small. Therefore, the smaller steps ensure smaller friction.
According to the first law of the limiting friction,
$\text{f}=\mu\text{N}$
where f is the frictional force
$\mu$ is the coefficient of friction
N is the normal reaction force
When we take smaller steps on ice, the normal reaction force exerted by the ice is small. Therefore, the smaller steps ensure smaller friction.
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