Question

The coefficient of static friction between feet of PT Usha of mass m and the ground is p. Assume that
she starts from rest and speedup continuously. The direction of friction is​

Answer 1

Answer:

The coefficient of static friction between feet of PT Usha of mass m and the ground is p. Assume that

she starts from rest and speedup continuously. The direction of friction is

Answer 2

The direction of friction is in the direction of running of PT Usha

Explanation:

Given:

The coefficient of static friction between PT Usha (mass m) and ground is p

To find out:

The direction of the friction

Solution:

• When a person runs or walks the necessary acceleration is provided by the frictional force.

• This frictional force acts opposite to the direction in which the person has tendency of slipping

• Since a running person has tendency to slip in the backward direction

• Therefore, the frictional force will act in the the forward direction

• Thus, the direction of friction is in the direction of running

Hope this answer is helpful.

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