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soldi70 [24.7K]
3 years ago
10

The period T of a simple pendulum depends on the length L of the pendulum and the acceleration of gravity g (dimensions L/P). (a

) Find a simple combination of L and g that has the dimensions of time. (b) Check the dependence of the period T on the length L by measuring the period (time for a complete swing back and forth) of a pendulum for two different values of L. (c) The correct formula relating T to L and g involves a constant that is a multiple of 1 T, and cannot be obtained by the dimensional analysis of Part (a). It can be found by experiment as in Part (b) if g is known. Using the value g
Physics
1 answer:
andriy [413]3 years ago
6 0

Answer:

a). L= meters, g= \frac{m}{s^{2} }

b). L= 5cm  T=0.448

    L= 10 m  T=6.34

c).  Constant= \frac{2*\pi }{\sqrt{g} }=\frac{2*\pi }{\sqrt{9.8} }=2.007089923

Explanation:

a).

T= 2*\pi  \sqrt{\frac{L}{g} } = 2*\pi \sqrt{\frac{m}{\frac{m}{s^{2} } } } \\T= 2*\pi \sqrt{\frac{s^{2}*m }{m} }=2*\pi  \sqrt{s^{2}  } \\T= s

b).

L_{1}= 5 cm, 5cm *\frac{1m}{100 cm} = 0.05 m

T=2*\pi \sqrt{\frac{L}{g} }

T=2*\pi \sqrt{\frac{0.05}{9.8} }= 0.448s

L_{1}= 10 m

T=2*\pi \sqrt{\frac{L}{g} }

T=2*\pi \sqrt{\frac{10}{9.8} }= 6.43s

c).

g= 9.8 \frac{m}{s^{2} }

T=2*\pi *\frac{\sqrt{L} }{\sqrt{g} } =T=2*\pi *\frac{\sqrt{L} }{\sqrt{9.8} } \\T= 2*\pi \frac{1}{\sqrt{9.8}} *\sqrt{L}\\T= 2.007089923*\sqrt{L}

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we substitute

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3 0
3 years ago
Exactly one turn of a flexible rope with mass m is wrapped around a uniform cylinder with mass M and radius R.
Dennis_Churaev [7]

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(a)

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(b)

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a = -282 / 1.4

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a = -20.56 g

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