Answer:If a circle was flattened by pushing down on it, it would most likely form into the shape of <em><u>ellipse </u></em>which has <em><u>two </u></em>focal points.
Explanation:
Ellipse is curve in a plane with two focus points. The sum of the distance of one point from both fixed points or focal points in the plane remain constant.
When circle was flattened by pushing it deform to plane shape likely to the shape of ellipse.
Answer:
The time is 0.90 sec.
Explanation:
Given that,
Height = 4.00 m
We need to calculate the time
Using equation of motion
For free fall, u = 0
Where, s = distance
g = acceleration due to gravity
t = time
Put the value into the formula
Hence, The time is 0.90 sec.
Answer:
I2>I1
Explanation:
This problem can be solved by using the parallel axis theorem. If the axis of rotation of a rigid body (with moment of inertia I1 at its center of mass) is changed, then, the new moment of inertia is gven by:
where M is the mass of the object and d is the distance of the new axis to the axis of the center of mass.
It is clear that I2 is greater than I1 by the contribution of the term Md^2.
I2>I1
hope this helps!!