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Rotated about a line on the surface ?
I = Mass * radius2
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Rotated about a line through the centre :
I = (2 * mass * radius2) / 5
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Why is moment of inertia of a solid disc smaller than that of a ring?
Moment of inertia depends upon the distribution of mass with respect to the axis of rotation.The greater the distance between the bulk of an object's mass and the axis of rotation, the greater the moment of inertia will be. A solid disk has its mass distributed evenly across its diameter, while a ring has its mass concentrated furthest from the centre of rotation.
What is the Moment of inertia of a solid hemisphere?
2/5 mr2
Will a solid metal sphere hold greater charge then a hollow sphere of the same diameter where does the charge reside in each case?
both will have same charge, in both caes charge will reside on surface.
A solid rectangular block of metal 49cm by 44cm by 18cm is melted and formed into a solid sphere find the radius ofthe sphere?
54.7
Why it difficult to catch a solid ball as compare to a hollow ball of equal radius?
it is simply because momentum of a solid ball,which is more than a hollow ball as solid ball has a great mass with respect to hollow ball! By Definition of momentum:- vector P=m.v<velocity> direction of momentum is in direction of motion so momentum is greater of solid ball that's why it is hard to catch a solid ball!
How do you derive the moment of inertia of solid sphere?
mass moment of inertia for a solid sphere: I = (2 /5) * mass * radius2 (mass in kg, radius in metres)
Why is moment of inertia of a solid disc smaller than that of a ring?
Moment of inertia depends upon the distribution of mass with respect to the axis of rotation.The greater the distance between the bulk of an object's mass and the axis of rotation, the greater the moment of inertia will be. A solid disk has its mass distributed evenly across its diameter, while a ring has its mass concentrated furthest from the centre of rotation.
The moment of inertia of a solid cylinder is?
the moment of inertia of a solid cylinder about an axis passing through its COM and parallel to its length is mr2/2 where r is the radius.
What is the Moment of inertia of a solid hemisphere?
2/5 mr2
Which solid is formed when a semicircle is revolved about a line containing the diameter of the semicircle?
a sphere
Why is hollow steel pipe stronger than solid steel?
For a given outer diameter, the solid shaft is stronger, but it weighs more.For a given weight, the hollow shaft is stronger because it has a bigger diameter.due to less weight & less bending moment..............the resultant bending moment for a solid pipe is much larger than for a hollow one because of their weight difference
What SI is used to measure a solid sphere?
That depends on what you want to measure - the diameter, the surface area, the volume, etc.
How do you determine density of sphere with Vernier caliper?
Measure the diameter and from that calculate the volume, then determine the mass of the sphere on a weighing device. Then it's just density = mass/volume ========================== It again depends on the sphere whether its hollow or its a solid sphere
Which will have the greater rolling down an incline- a hoop or a solid disk?
The disk because it has a lower moment of inertia for a given mass.
Why is it necessary to mention the axis of rectangular bar while calculating the moment of inertia?
An object rotating about its long axis will have a different moment of inertia than when it is rotating about its short axis. A solid disk will have a different moment than a washer, and there are formulas derived for calculating the moments of many common shapes.
What solid shape has no face?
Since a sphere is round it is a shape without a face.
Which has more rotational inertia a bicycle wheel or a solid disk of the same mass and diameter?
The bike wheel. It wil have its mass concentrated out by the rim.
