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3 years ago

What are the precautions for compound Pendulum experiment

Physics

1 answer:

Nady [450]3 years ago

6 0

Make sure you measure the length of the pendulum from the centre (of mass) of the plumbob.

Make sure the top edge is well defined- clamp the string between two blocks so it is clear where the string can move and where it cant.

Make sure the top support is fixed- eg a clamp stand can easily flex and so the top support moves.

Make sure you use small amplitudes ( less than 10 degrees from the vertical)

Make sure you time enough swings such that the total time is sufficeint to get the uncertainty in the timing of a single swing down. (It is the total time that is important not the number of swings)

Release the pendulum and start timing counting while it is swinging. Start the clock and say zero (not 1).

Have a pre-prepared results table so that you can record your results accurately without rushing.

Do at least 3 sets of readings to identify any anomalies.

Explanation:

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andreev551 [17]

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The resistance of the system is:

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3 years ago

If a ball is dropped from a height (H) its velocity will increase until it hits the ground (assuming that aerodynamic drag due

mario62 [17]

Answer:

9.801 m/s²

Explanation:

t = Time taken

u = Initial velocity

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a = Acceleration

Converting to m/s

$39\ ft/s=\frac{39}{3.281}=11.88\ m/s$

Equation of motion

$v^2-u^2=2as\\\Rightarrow a=\frac{v^2-u^2}{2s}\\\Rightarrow a=\frac{11.88^2-0^2}{2\times 7.2}\\\Rightarrow a=9.801\ m/s^2$

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3 years ago

As a woman walks, her entire weight is momentarily placed on one heel of her high-heeled shoes. Calculate the pressure exerted o

STatiana [176]

Answer:

3335400 N/m² or 483.75889 lb/in²

Explanation:

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A = Area = 1.5 cm²

m = Mass of woman = 51 kg

F = Force = mg

When we divide force by area we get pressure

$P=\frac{F}{A}\\\Rightarrow P=\frac{mg}{A}\\\Rightarrow P=\frac{51\times 9.81}{1.5\times 10^{-4}}\\\Rightarrow P=3335400\ N/m^2$

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The pressure exerted on the floor is 3335400 N/m² or 483.75889 lb/in²

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3 years ago

How does kinetic energy affect the stopping distance of a small vehicle compared to a large vehicle?

Vilka [71]

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4 years ago

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creativ13 [48]

Answer:

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3 years ago

What are the precautions for compound Pendulum experiment​

What are the precautions for compound Pendulum experiment