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LiRa [457]
3 years ago
11

What do you mean by work?​

Physics
1 answer:
erica [24]3 years ago
4 0

Work is transfer of energy in an object when it travel some distance by external force,

Work= force × displacement

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The head

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A penny rides on top of a piston as it undergoes vertical simple harmonic motion with an amplitude of 4.0cm. If the frequency is
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1) At the moment of being at the top, the piston will not only tend to push the penny up but will also descend at a faster rate at which the penny can reach in 'free fall', in that short distance. Therefore, at the highest point, the penny will lose contact with the piston. Therefore the correct answer is C.

2) To solve this problem we will apply the equations related to the simple harmonic movement, hence we have that the acceleration can be defined as

a = -\omega^2 A

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From a reference system in which the downward acceleration is negative due to the force of gravity we will have to

a = -g

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\omega = \sqrt{\frac{g}{A}}

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\omega = 2\pi f

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f = 2.5Hz

Therefore the maximum frequency for which the penny just barely remains in place for the full cycle is 2.5Hz

6 0
3 years ago
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Convection currents generated within the asthenosphere push magma upward through volcanic vents and spreading centres to create new crust. Convection currents also stress the lithosphere above, and the cracking that often results manifests as earthquakes.
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