jesseniaindiaaoyr75n
05.12.2019 •
Physics
Alight horizontal spring has a spring constant of 138 n/m. a 3.35 kg block is pressed against one end of the spring, compressing the spring 0.123 m. after the block is released, the block moves 0.281 m to the right before coming to rest. the acceleration of gravity is 9.81 m/s 2 . what is the coefficient of kinetic friction between the horizontal surface and the block?
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Ответ:
Explanation:
using the law of the conservation of energy:
where K is the spring constant, x is the spring compression, N is the normal force of the block, is the coefficiet of kinetic friction and d is the distance.
Also, by laws of newton, N is calculated by:
N = mg
N = 3.35 kg * 9.81 m/s
N = 32.8635
So, Replacing values on the first equation, we get:
solving for :
Ответ:
an underground lake
Explanation:
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