Solve the Puzzle: Find the Scale Readings for a Mass Distribution

AI Thread Summary
To solve the problem of determining the scale readings for the mass distribution on the plank, the key concept is torque, which involves calculating moments of force. The relevant formula is torque (τ) = force (F) x distance (r) from the pivot point. The total torque created by the hanging masses must be balanced by the torques exerted by the scales at either end of the plank. By applying these principles and calculating the forces acting on the plank, the scale readings can be determined. Understanding and applying the concept of torque is essential for solving this type of physics problem.
innman
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formula Help!

i got this question but i don;t know which formula to use

Q - A 1m plank of Mass 1.0kg is placed on two scales which are at either end of the plank. Masses are hung underneath the plank.

Mass A = 5.0kg at a distance of 0.30m from the left of the plank
Mass B = 5.0kg at a distance of 0.90m from the left of the plank

What do the scales read


Can sumone help me!? pleasez
 
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this is a moments of force question...you should really have a go at these questions and post what you've come up with so far then we would know whether the advice we give you is useful or not.
 
Torque is essentially what you are dealing with, or the turning force. Force is calculated with F*d, or in your case, F*r because you're dealing with torque rather than force exactly.

This is the formula you most likely need to use to solve this problem.
 

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