3 years ago

1. Define friction. Name and describe two kinds of friction.

Physics

1 answer:

jeka57 [31]3 years ago

6 0

Answer:

Friction is a force that holds back the movement of a sliding object.

Explanation:

The two types of friction: Static friction and Kinetic friction. Static friction operates between two surfaces that aren't moving relative to each other, while kinetic friction acts between objects in motion.

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0.72 Hz minimum frequency

Explanation:

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here $\omega _{o}^{2}= k/m$ = (6.30)/(0.135) = 46.67 N/m kg

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$\omega ^{2}= \omega _{o}^{2}\pm F/m$

⇒ ω² =46.67 ± 26.2 = 72.87 or 20.47

⇒ ω = 8.53 or 4.52 rad/s

Frequency = f

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