1. How is the center of mass related to gravitational acceleration, g, (a) Depen
ID: 1770504 • Letter: 1
Question
1. How is the center of mass related to gravitational acceleration, g, (a) Dependent (b) if g is constant, the center of gravity is equal to the center of mass (c) Independent (d) Neutral (e) The center of mass location should be inside the rigid body (member) The centroid will coincide the center of gravity when the density is (a) evenly distributed, (b) varying with temperature (c) unevenly distributed (d) temperature and location independent (e) change linearly with its height 2. The unit of (a) the centroid of an area is L (b) the moment is force L2 3. (c) loading intensity, w, is force/L (d) fluid pressure is force/L (e) center of gravity is force L 4. Regarding fluid pressure (a) it is a function of depth (b) is inversely proportion to the specific weight of fluid (c) is independent of fluid viscosity (d) it can be related to horizontal force dF (e) has a unit of force/area pdA (a) it is a function of depth (b) is inversely proportion to the specific weight of fluid (c) is independent of fluid viscosity (d) it can be related to horizontal force dFh pdA (e) has a unit of force/areaExplanation / Answer
1,
The center of mass is the mean position of the mass in an object. If you have the same amount of mass to your right as you have to your left and the same amount above as you have below and the same amount in front as you have behind, then you must be at the center of mass.
Center of mass is independent of gravitational acceleration,
Center of mass and center of gravity are two terms that are often used interchangeably, but they're really not the same.
If g is constant then Center of mass and center of gravity are same.
It is not necessary that center of mass lies inside the rigid body, take example of a ring.
Correct options: (b) and (c)
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