4 years ago

What was the greatest discovery by galileo during his inclined-plane experiments?

1 answer:

3 0

Galileo discovered during his inclined-plane experiments that a ball rolling down an incline and onto a horizontal surface would roll indefinitely.

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Explanation: because the magnet is not allined its not gonna pick up anything metal cause its not alligned

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A ball bearing took 20.9ˍs to fall when dropped from a helicopter. From what height was the ball bearing dropped?

mr_godi [17]

$\boxed{ \bf{Given : }}$

Time taken by a ball bearing = 20.9 seconds

Initial velocity,u = 0 m/s [ Body starts from rest ]

Acceleration due to gravity,g = 9.8 m/s²

$\boxed{ \bf{To \: be \: calculated : }}$

From what height was the ball bearing dropped?

$\boxed{ \bf{Solution : }}$

By using second equation for freely falling body, we get:

$\sf{h = ut + \frac{1}{2} gt {}^{2} }$

Substituting the values..

$\sf\rightarrow \: h = 0 \times 20.9 + \dfrac{1}{ \cancel{2}} \times \cancel{9.8} \times 20.9$

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$\sf \rightarrow \: 102.41 \: m \: (approx)$

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