A 20 kg mass is attached by a string to a 10 kg mass as shown below. Both masses are made of the same material. A hand pulls on the system and gives it an acceleration of 2.0 m/s². The tension in the rope at point P is 70 N. What is the coefficient of friction between the masses and the surface? 2.0 m/s² a) 0.15 b) 0.20 c) 0.43 d) 0.57 20 kg P 10 kg

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A 20 kg mass is attached by a string to a 10 kg mass as shown below. Both masses are made of the
same material. A hand pulls on the system and gives it an acceleration of 2.0 m/s². The tension in
the rope at point P is 70 N. What is the coefficient of friction between the masses and the surface?
a) 0.15
b) 0.20
c) 0.43
d) 0.57
20 kg
2
2.0 m/s²
10 kg
Transcribed Image Text:A 20 kg mass is attached by a string to a 10 kg mass as shown below. Both masses are made of the same material. A hand pulls on the system and gives it an acceleration of 2.0 m/s². The tension in the rope at point P is 70 N. What is the coefficient of friction between the masses and the surface? a) 0.15 b) 0.20 c) 0.43 d) 0.57 20 kg 2 2.0 m/s² 10 kg
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