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harhar
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If friction is negligible, and masses of 100g and 50g are pushed across with an applied force of 1N of the greater mass, how do I find the magnitude of the force exerted by each of the two masses on each other?
harhar said:Ok the EXACT question is the same concept but w/ different numbers because I just tried to use easy numbers to deal with..
2 masses in contact w/ each other are 0.113kg and 0.139kg. No friction. The applied horiz. force of magnitude 5.38x10^-2 N is exerted on the heavier mass.
Determine:
a)magnitude of accel. of the 2 mass system.
b)magnitude of the force exerted by each of the 2 masses on the other
I've already gotten a) which is 0.213m/s^2
chroot said:I assume there's a picture, also, showing one mass above the other. You need to tell us about those parts of the question when posting your question here, or we won't be able to make sense of it.
The answer to b) is simply the weight of the mass on top. The top mass presses its weight down on the bottom mass, and the bottom mass in turn pushes back up, supporting it.
- Warren
chroot said:learningphysics,
That's very true. I have the feeling the two blocks are actually side-by-side. If I were harhar, I would be yelling at the teacher by now for writing such an incomprehensible problem.
- Warren
chroot said:*sigh*
If the two bodies are side-by-side, then pushing on one pushes on the other, too. The force you apply to one body gets applied directly to the other, same magnitude, same direction. Weight is not involved.
- Warren
harhar said:Yeah sry, turns out they were side by side...I was overcomplicating it
Thanks for your help guys.
LOL, yes, of course... I appear to be going nuts.learningphysics said:But Warren, this isn't true. The force acting on the second mass isn't equal to the force being applied to the first.
The accelerations of the two masses are the same.
chroot said:LOL, yes, of course... I appear to be going nuts.
- Warren
The formula for calculating the force exerted by two masses on each other is F = G * (m1 * m2)/r^2, where F is the force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between the two masses.
The force exerted by two masses on each other is inversely proportional to the square of the distance between them. This means that as the distance between the two masses increases, the force decreases.
The unit of measurement for force is Newton (N). In the formula F = ma, where F is force, m is mass, and a is acceleration, the unit for force is kg * m/s^2.
The mass of an object directly affects the force it exerts on another object. The greater the mass of an object, the greater the force it will exert on another object.
Yes, the force exerted by two masses on each other can be negative. This happens when the two masses have opposite signs (one is positive and one is negative) and the force between them is attractive rather than repulsive.