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inessss [21]
2 years ago
13

A light horizontal spring has a spring constant of 167 N/m. A 2.77 kg block is pressed against one end of the spring, compressin

g the spring 0.132 m. After the block is released, the block moves 0.284 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?
Physics
1 answer:
aalyn [17]2 years ago
5 0

Answer:

μ = 0.189

Explanation:

The spring potential energy will convert to work of friction

    Fd = ½kx²

μmgd = ½kx²

       μ = kx²/2mgd

       μ = 167(0.132²) / (2(2.77)(9.81)(0.284))

       μ = 0.18852424...

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93 cm3 liquid has a mass of 77 g. When calculating its density what is the appropriate number of significant figures
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Answer:

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Second, we calculate the magnitude of the resultant force by Pythagorean Theorem:

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Let suppose that direction of the resultant force is an standard angle. According to (1), the resultant force is set in the first quadrant:

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