Question

5. You are pulling a rubber sneaker along concrete

a. Calculate force of static friction between your sneakers (2kg) and sidewalk if coefficient of
static friction is 0.9

Answer 1

Fs = 17.66 N

Step-by-step explanation:

The force of static friction is given by the following formula:

`F_s = \mu R = \mu W\\`

where,

Fs = The force of static friction = ?

μ = coefficient of static friction = 0.9

W = weight of sneakers = mg

m = mass of sneakers = 2 kg

g = acceleration due to gravity = 9.81 m/s²

Therefore,

`F_s = \mu mg\\F_s = (0.9)(2\ kg)(9.81\ m/s^2)\\`

Fs = 17.66 N