MA of lever = d1/d2= 500/30 = 16.666666666666-> so about 16.67
Re: Machines B/C
Posted: March 26th, 2020, 2:27 pm
by imaditi
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)?
Re: Machines B/C
Posted: March 26th, 2020, 2:48 pm
by Creationist127
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!) ?
Re: Machines B/C
Posted: March 26th, 2020, 2:50 pm
by imaditi
yep! your turn
Re: Machines B/C
Posted: March 26th, 2020, 2:56 pm
by Creationist127
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.
Re: Machines B/C
Posted: March 26th, 2020, 3:14 pm
by imaditi
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.
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)?
Re: Machines B/C
Posted: April 25th, 2020, 12:37 pm
by MoMoney$$$;)0)
No questions here for a while once again so I'll give it a shot.
A typical car has an axle with 1.13 cm radius and a wheel with a radius of 27.75 cm. What is its mechanical advantage assuming the typical wheel and axle?
Re: Machines B/C
Posted: April 25th, 2020, 12:47 pm
by Umaroth
0.0407, less than 1 because it's the axle doing to driving
A door is 1.00 m wide and the handle is 0.75 m from the hinge. What is its IMA?
Re: Machines B/C
Posted: April 25th, 2020, 7:49 pm
by smayya337
Umaroth wrote: ↑April 25th, 2020, 12:47 pm0.0407, less than 1 because it's the axle doing to driving
A door is 1.00 m wide and the handle is 0.75 m from the hinge. What is its IMA?
1.33, since it should just be 1.00/0.75
I'll post a new question tomorrow.