Answer:
Option (B)
Explanation:
The gravitational force is usually defined as the force of attraction that occurs due to the presence of the object's mass. The mass of the object and the force of gravity is directly proportional to each other. At the atomic as well as at the subatomic levels, this gravitational force of gravity is comparatively so weak because the masses of these atoms, subatomic particles are extremely very small. This force has a strength of about 10^-40 and this far smaller in comparison to the strength of electromagnetism.
On the other hand, the other universal forces such as the electric force, magnetic and strong nuclear force are very much stronger than the gravitational force. The nuclear force is strongest of all, where it is 100 times stronger than the electromagnetic force and approximately 10^36 times stronger than the gravitational force.
Thus, the correct answer is option (B).
Both F's are forces, so µ must be unitless/dimensionless.
F[friction] = µ F[normal]
Or, more explicitly in terms of the units:
(Newtons) = (constant) (Newtons)
Answer:
Explanation:
The work done by stretching the spring is:
Answer:
borosilicate glass
Explanation:
headlamp glass is a borosilicate glass by gravity feed
The kinetic energy of a mass oscillating on a vertical spring is at a minimum when the object is at the extreme points of its motion. This is because the object has momentarily stopped moving, leading to zero kinetic energy. All the energy is instead stored as potential energy in the spring.
In the case of a mass oscillating on a vertical spring, the kinetic energy of the object is at a minimum when the object is at its extreme points, i.e., when it is at points 'a' or 'b'. This is because, at these positions, the object momentarily comes to rest before reversing its direction, thereby having a velocity (and hence kinetic energy), which is proportional to the square of the velocity, of zero. The energy at these points is mainly stored in the spring as potential energy.
At these extreme points, we have a situation where the potential energy (U) is maximum and the kinetic energy (K) is equal to zero. At the midpoint position x = 0, the entire energy is kinetic while the potential energy in the spring is zero, which suggests that the kinetic energy is minimum at the extreme positions.
This property of kinetic and potential energy fluctuating between each other is a common characteristic of simple harmonic motion.
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