Machines B/C

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Re: Machines B/C

Post by broeknharted » January 1st, 2020, 7:19 pm

MA of lever = d1/d2= 500/30 = 16.666666666666-> so about 16.67

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Re: Machines B/C

Post by imaditi » March 26th, 2020, 2:27 pm

Since no one has gone in a while here is another question.

A simple machine with an ideal mechanical advantage of (a) is placed in series with another simple machine with an ideal mechanical advantage of (a-1), which is placed in series with other simple machines with an ideal mechanical advantage of (a-2), and so on, until the whole system is placed in series with a simple machine with an ideal mechanical advantage of 1. What is the ideal mechanical advantage of the resulting compound machine in terms of (a)?
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Re: Machines B/C

Post by Creationist127 » March 26th, 2020, 2:48 pm

imaditi wrote:
March 26th, 2020, 2:27 pm
Since no one has gone in a while here is another question.

A simple machine with an ideal mechanical advantage of (a) is placed in series with another simple machine with an ideal mechanical advantage of (a-1), which is placed in series with other simple machines with an ideal mechanical advantage of (a-2), and so on, until the whole system is placed in series with a simple machine with an ideal mechanical advantage of 1. What is the ideal mechanical advantage of the resulting compound machine in terms of (a)?
Is it (a!) ?
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Re: Machines B/C

Post by imaditi » March 26th, 2020, 2:50 pm

yep! your turn
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Re: Machines B/C

Post by Creationist127 » March 26th, 2020, 2:56 pm

You are pulling a block of mass m up an inclined plane at a constant speed. The plane has a coefficient of friction μ and an angle of incline θ. Derive an expression for the actual mechanical advantage of the plane in terms of μ and θ.
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Re: Machines B/C

Post by imaditi » March 26th, 2020, 3:14 pm

Creationist127 wrote:
March 26th, 2020, 2:56 pm
You are pulling a block of mass m up an inclined plane at a constant speed. The plane has a coefficient of friction μ and an angle of incline θ. Derive an expression for the actual mechanical advantage of the plane in terms of μ and θ.
doesn't it depend on efficiency or am I mistaken
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Re: Machines B/C

Post by Creationist127 » March 26th, 2020, 3:15 pm

imaditi wrote:
March 26th, 2020, 3:14 pm
Creationist127 wrote:
March 26th, 2020, 2:56 pm
You are pulling a block of mass m up an inclined plane at a constant speed. The plane has a coefficient of friction μ and an angle of incline θ. Derive an expression for the actual mechanical advantage of the plane in terms of μ and θ.
doesn't it depend on efficiency or am I mistaken
I mean, yeah... but as far as I know, efficiency is just IMA/AMA.
EDIT: Wait, I just realized that what I said doesn't help at all. It may help to remember that AMA is (work you would have done without machine) / (work done using machine)?
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