No, moment of inertia is a tensor quantity. Sometimes it behaves as scalar & sometimes as a vector. Sometimes it depends on the directions and sometimes depends on distribution of mass of the particles in the object.

Higher moments of inertia indicate that more force has to be applied in order to cause a rotation whereas lower moments of inertia means that only low forces are necessary. Masses that are further away form the axis of rotation have the greatest moment of inertia.

The unit of moment of inertia is a composite unit of measure. In the International System (SI), m is expressed in kilograms and r in metres, with I (moment of inertia) having the dimension kilogram-metre square.

Real life examples of moment of inertia – definition The MOI of the hollow shaft is more compared to that of a solid shaft. Shipbuilding- Moment of inertia has a big impact on shipbuilding. A ship may sink by rolling but a ship will never sink by pitching.

Inertia is the resistance of an object to any change in its motion, including a change in direction. An object will stay still or keep moving at the same speed and in a straight line, unless it is acted upon by an outside force.

The motion of a ball falling down through the atmosphere, or a model rocket being launched up into the atmosphere are both examples of Newton’s first law. The motion of a kite when the wind changes can also be described by the first law.

Newton’s First Law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. It may be seen as a statement about inertia, that objects will remain in their state of motion unless a force acts to change the motion.

Assuming rightward is the positive direction. Newton’s first law says that if the net force on an object is zero ( Σ F = 0 /Sigma F=0 ΣF=0/Sigma, F, equals, 0), then that object will have zero acceleration. In other words, constant zero velocity—at rest—or constant non-zero velocity—moving with a constant velocity.