What is the velocity of a body in circular motion?
Since the body describes circular motion, its distance from the axis of rotation remains constant at all times. Though the body’s speed is constant, its velocity is not constant: velocity, a vector quantity, depends on both the body’s speed and its direction of travel.
Can speed be zero circular motion?
According to Newton’s first law, a body in motion will remain in motion with constant velocity if the net force acting on it is zero. Constant velocity means that both the speed and direction do not change….Force and Circular Motion.
| Radius (m) | Velocity (m/s) | Force (N) |
|---|---|---|
| 0.090 | ± | ± |
| 0.100 | ± | ± |
Can centripetal force be negative?
Originally Answered: Can centripetal force be negative? Centripetal forces are just forces that have a direction and magnitude. Whether it points in the negative direction or not depends entirely on the coordinate system. Inward is normally positive in circular coordinate systems but it doesn’t have to be.
Why don’t we feel centrifugal forces?
The fundamental reason that we don’t feel centrifugal force is because the scale of the human body is so much smaller than the ‘scale’ of the earth. Astronauts in a revolving space station feel the stress caused by the contact force of the floor.
What is the centripetal force of Earth?
Centripetal force on Earth is the force of gravity acting on objects (us) orbiting Earth – we happen to orbit the Earth on its surface, at its exact speed of rotation, because gravity “glues” us to the surface as the Earth spins on its rotational axis.
Is anti gravity possible?
Aside from the long-running Anti Gravity column in Scientific American, however, there is no such thing as antigravity. Gravity is a force arising among any two masses in the universe. As of yet, no technology exists to neutralize the pull of gravity.
Why centrifugal force is a fictitious force?
We say fictitious because the actual source of the centrifugal acceleration is somewhat indirect and the experience one has results from the unbalanced forces acting on the reference frame, not a force. Note, it is an acceleration not a force. They are not forces and should not be called forces.
Did Einstein said gravity is not a force?
Einstein argued that gravity isn’t a force at all. He described it as a curvature of time and space caused by mass and energy. Their math, laid down in 10 equations, explained how gravity could move around objects via a warped reality, accelerating without ever feeling any mysterious Newtonian forces.
Can gravity cause inertia?
The gravitational interaction of all masses in a finite static universe model is shown to create a finite resistance to acceleration, which is inertia.
What would happen if the moon lost its inertia?
Inertia is the resistance of any physical object to any change in its state of motion (this includes changes to its speed, direction or state of rest). Hypothetically, if inertia is lost, the only force acting on moon will be the gravitational pull which accelerates the moon towards earth.