Sage-Tips

What will be the duration of the day if the earth suddenly contracts with same mass?

Time period of rotation of Earth is what we call a day. So, for an Earth that is contracted to half its present size with mass constant, the duration of a day will be just 6hrs.

What would be the duration of the day if the radius of the earth reduces to half of its present value?

as the radius of the earth becomes half, the moment of inertia will become ¼the initial value. as the angular velocity is increased 4 times and the angle to be rotated is still 2π. So, the duration of a day will be decrease by 4 times and will become 6 hours.

What would happen to the graph if the earth shrinks to half of its radius?

Hence, the correct answer is that If the radius of the earth is reduced to half of its present value, with no change in the mass, the acceleration due to gravity will become Four times to that of the original value which is option B.

What will be the duration of the day if the earth suddenly shrinks to half of its present radius mass remaining unchanged Mi of Sphere 2 5 mr2?

So, duration of the day will be 1.5 hrs.

What is the length of the new day if the Earth’s radius shrinks to 1 Nth without changing its mass?

n24​ hrs
Statement-1: If the Earth suddenly contracts to n1​th of its present size without any change in its mass. Statement-2:The duration of the new day will be n24​ hrs.

What will be the duration of the day if the earth suddenly shrinks to 1 27?

Earth would spin 9 times faster, so our day would be only 2.66 hours long.

What will be the duration of day and night in hours if the mass of the earth is suddenly reduced to half its original value the diameter remaining constant?

(A) : If earth shrink to half its present size, length of the day would become 6 hours.

What would be the duration of the year if the distance between the earth and the sun gets halved?

There will be 129 days in an year.

What would be the duration of the day if earth shrinks to half its radius with 2/3 of its mass?

Length of the day would become 6 hours.

What will be the duration of the day if the earth suddenly shrinks to 1/64 of its original volume mass of earth remains unchanged?

If earth suddenly shrinks to (1//27)^(th) of its original volume, mass remaining unchanged then what will be the duration of the day.

What will be the duration of the new day if Earth contracts?

If the earth were to suddenly contract to ( 1 n)th of its present radius without any change in its mass, the duration of the new day will be nearly (in hours)?? Conservation of angular momentum dictates that the angular momentum before and after the contraction must be the same. ω = 2π T ← angular velocity of the earth = 2π day.

What would happen if the Earth’s mass was half its radius?

Because of conservation of angular momentum, the earth’s angular speed would quadruple if its mass was contracted into half its radius. This would mean we would have roughly six hour days (the earth is not a perfect sphere, and gravity would cause further contraction).

What is the new day duration if the radius is halved?

Let r2 and T 2 be the new radius and new day duration, and rewrite the conservation equation as: If the radius is halved, then the new day is 24 22 = 6 hours long.

What happens to the moment of inertia when the Earth shrinks?

Let us consider the radius of earth as R. If earth shrinks to half of radius then, R=R/2. Now we know, Moment of inertia is directly proportional to r^2. So after shrink, the moment of inertia become 1/4 of the original. And so a/c to law of conservation of angular moment, the final velocity becomes 4 times the original.