Answer:
Water stay in the bucket if the bucket is spin upside down and fast because due to centripetal force.
Explanation:
When the bucket is at highest point in the circular motion then there will be three forces work centripetal force in upward direction ann normal and weight will work in downward direction.
By newton law,
centripetal force=weight + normal force.
If the water will stay in the bucket in upside direction then there will be normal force is positive which means the centripetal force is greater than weight.
And to increase the centripetal force velocity should be greater because it depends on velocity.
The practical application of centripetal force are discussed below:
(a) Turning of the car on a banked road or in circular track.
(b) Revolution of the earth around the sun.
Answer:
Hello There!
It is Speed.
Because in the question it is said that at which speed car is travelling.
Speed is a scalar quantity.
If it is velocity then first know this that it is a vector quantity.
It must include both magnitude and direction.
If it is velocity then it would be 40 mph east or west or north or south.
<h2>I hope it is helpful to you...</h2><h3>Cheers!_____________</h3>Answer:
True
Explanation:
The tensile stress, σ, on a solid cylindrical wire is given by the following relationship;
Where;
= The tensile force
= The original cross sectional area of the cylindrical wire = π·R²
R = The radius of the wire
Therefore;
= σ ×
= σ × π × R²
Therefore, the tensile force is directly proportional to the square of the radius of the cylindrical wire, and as the radius of the wire increases, which is by increasing the thickness of the wire, the tensile force is largely increased
The correct option is; True.