Question
Asked Nov 15, 2019
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The see-saws below have boxes placed on them that all weigh the same amount. The tick marks are evenly spaced to help measure distance. Add a single box to each see-saw so that it will be in rotational equilibrium.

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A)
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В) A)

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Step 1

(A)  The below figure represents a see saw having boxes on top of them .

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m M d kd d -

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Step 2
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Considering each block is of mass m , and taking clockwise direction as positive and anticlockwise direction as negative The net torque is given by T = mgd + mg (2d)mg(3d)-(2m)gd -mg(2d) = 6mgd - 4mgd 2mgd Thus, to maintain rotational equilibrium the block of mass mshould be placed at a distance of 2d from the center

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Step 3

(B)  The below figure represents a se...

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rol-34 2a

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