Centre of Mass MCQ
Test your knowledge with important Centre of Mass MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Centre of Mass MCQs on Bissoy. Bissoy App
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Determine the x coordinate of centroid of the wire in the shape of circle as shown.
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The body is sometimes acted by two or three force members. The difference between the two and the three force members is ________________
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One of the use of the centre of mass or centroid is as in the simplification of the loading system the net force acts at the ___________ of the loading body.
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If solving the question in 3D calculations is difficult, then use the 2D system and then equate the ratio of the product of the centroid of the section to its mass to the total mass of the body to the centre of mass.
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We first make equilibrium equations of the body by considering all the three dimensional forces and then the free body diagram is made and then equations are made to be applied so as to calculate the centre of mass.
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What is not the condition for the equilibrium in calculations involved in the determination of the centre of mass?
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A body’s all small particles have a small mass which is being applied by them to the body, which adds up to the total mass of the body.
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The all small masses that are being applied by all the infinite particles of the body act __________ to each other.
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The total of all the masses of small particles adds up to give the total body mass. This mass lies along with gravity gives a force vector which is being passed by ________
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We use sometimes the measures to know the direction of moment in the calculations of the centre of mass. It is done by right handed coordinate system. Which is right about it(consider the mentioned axis to be positive)?
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Mass is best given by _______
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The centre of mass of the body always lies on the line of symmetry for an object with uniform density.
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A uniform free rectangular steel plate is heated from 273 to 373 kelvin. The initial area of the plate is 15 sq. cm. What is the shift of the centre of mass?
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Two particles A and B, initially at rest, start moving towards each other under a mutual force of attraction. When the speed of A is “10 m/s” and the speed of B is “800 m/s”, what is the speed of their centre of mass?
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A system consists of 2 particles of the same mass. Let one particle be at rest and another particle have an acceleration of “2a”. What would be the acceleration of the centre of mass of the system?
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The velocities of three particles of masses 10 kg, 20 kg and 30 kg are 10i, 10j and 10k m/s, respectively. What is the velocity of their centre of mass?
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Two bodies of masses 5 kg and 3 kg are moving towards each other at velocities of 3 m/s and 5 m/s, respectively. What is the velocity of their centre of mass?
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For an object with the centre of mass at the origin, the x-coordinates of particles of the object _____
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Consider a system on which there are external forces acting. If the vector sum of all these external forces is zero, then the centre of mass _____
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An asteroid enters the atmosphere of the earth and breaks into two pieces. One of the pieces is larger than the other. Which of the following is true considering the centre of mass of both the pieces together?
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Numerous particles in a system are placed at a distance of “D” from the origin. The position of the centre of mass will definitely be _____
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For which of the following does the centre of mass lie outside the body?
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The centre of mass for an object always lies inside the object.