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Elan Coil [88]
3 years ago
11

Suppose the counter attendant pushes a 0.27 kgkg bottle with the same initial speed on a different countertop and it travels 1.7

mm before stopping. What is the magnitude of the friction force from this second counter
Physics
1 answer:
xeze [42]3 years ago
6 0

Answer:

The force of friction is 622.58 N.

Explanation:

Given that,

Mass of the bottle, m = 0.27 kg

Finally it stops, v = 0

Distance traveled by the bottle, d = 1.7 mm = 0.0017 m

Let the initial speed of the bottle, u = 2.8 m/s

Let f is the force of friction is acting on the bottle. The force of friction is given by Newton's second law of motion as :

-f=ma\\\\a=\dfrac{-f}{m}.............(1)

Using third equation of motion :

v^2-u^2=2ad

v^2=2ad

v^2=\dfrac{-2fd}{m}\\\\f=\dfrac{-v^2m}{2d}\\\\f=\dfrac{-(2.8)^2\times 0.27}{2\times 0.0017 }

f = -622.58 N

So, the force of friction is 622.58 N.

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