The rock and meter stick balance at the 25-cm mark. The meter stick has a mass of 1 kg. What...

Question:

The rock and meter stick balance at the {eq}\displaystyle 25-cm {/eq} mark. The meter stick has a mass of {eq}\displaystyle 1 kg. {/eq}

What must be the mass of the rock?

Torque:

In order to rotate an object about the fixed axis of rotation, we need to apply a force perpendicular to the direction of the force and the product of force and the perpendicular distance is equal to the torque acting on the object. The torque acting on the object at the center is equal to zero and the body is in rotational equilibrium.

Answer and Explanation: 1

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Given

The distance of the centre of mass of the metre stick from one end is {eq}x_m= 50\ cm {/eq}

The expression of torque is given as:

{eq}\tau=F...

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Center of Mass | Definition, Equation & Calculation

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Chapter 1 / Lesson 10
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Learn the definition of and formula for an object's center of mass. Understand the method used to calculate the position of a center of mass.


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