Practice Centre Of Mass (6.2) - SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

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8 questions

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6 sample questions

Question 1.
What is the center of mass?
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Think about balancing an object on a pencil.
Question 2.
How do you calculate the center of mass for two particles?
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Remember to account for the masses in the numerator.
3Question 3.
The center of mass of a system lies at the geometric center of the object.
- True
- False
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Consider cases where mass is unevenly distributed.
4Question 4.
What formula is used to calculate the center of mass for three particles?
- X_{CM} = (m1*x1 + m2*x2 + m3*x3)/(m1 + m2 + m3)
- X_{CM} = (m1 + m2 + m3)/(x1 + x2 + x3)
- X_{CM} = (x1 + x2 + x3)/(3)
- X_{CM} = m1*x1 + m2*x2 + m3*x3
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Think of how to balance masses.
Question 5.
Given a non-uniform bar with varying densities along its length, how would you calculate its center of mass?
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Consider how to handle differing density.
Question 6.
How would the center of mass of a system of particles change if one of the particles is removed?
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Visualize the impact of mass removal on balance.

4 more questions in this section. Enroll free to practise them all.