A Sewing Machine Needle Moves Up and Down in Simple

question 49

Short Answer

A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz.
(a)What is the maximum speed of the needle?
(b)What is the maximum acceleration of the needle?

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Definitions:

Molecular Weights

A measure of the total mass of atoms in a molecule, calculated as the sum of the atomic masses of all atoms in the molecule.

Compound

A substance formed by the chemical combination of two or more elements in fixed proportions.

Healing Presence

The act of bringing one's whole self into interaction with another, fostering recovery or well-being through the quality of being present.

Preconceived Answers

Ideas or solutions formed prior to having a full understanding of a question or problem.