Two wheels, each with the same radius R and the same total mass M, are rotating about their fixed axles. Wheel A is a hoop with
1 answer:
Answer:
Wheel A
Explanation:
Moment of inertia is the tendency of a body to resist angular acceleration.
The moment of inertia of a body having its mass concentrated away from the axis of rotation will have a higher value.
<u>For a ring, we have the moment of inertia as:</u>
where:
m = mass of the ring
r = radius of the ring
<u>Moment of inertia for a disc:</u>
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Answer:
The wavelength in vacuum is equal to 428.8 nm.
Explanation:
Given that,
The wavelength of light,
The refractive index of glass, n = 1.51
We need to find the wavelength in vacuum. The relation between wavelength and refractive index is given by :
So, the wavelength in vacuum is equal to 428.8 nm.
There are two external force acts on the chair.
1. The force due to earth gravity, acts in the downward direction.
2. Reaction force of the gravity, which acts in the Upward direction (Normal Force).
On every object, there is a force acts due to gravity of earth, which pulls the object towards the centre of earth, known as gravity force, always acts in the downward direction. Mathematically it's given as
F=mg
here, m is the mass of the object, and g is the acceleration of gravity.
To balance this gravity force, a counter force acts in the opposite direction, whose magnitude is equal to the force of gravity
