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Anything spinning at a constant rate (even if the rate of spin is zero).
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What is necessary for an object to be in complete rotational and translational equilibrium?
When the vector sum of all the forces acting on a body of mass is zero, the body has zero acceleration (that is, the body's centre of mass moves with constant velocity).In a similar fashion, if the net torque on a body is zero, the body has zero angular acceleration (that is, the body's angular velocity remains constant). This is the condition for rotational equilibrium.
Is acceleration due to gravity act on a body resting on a table zero?
no,but the table exerts an equal & opposite force so net force is zero.
A car is moving with constant speed and yet the acceleration and net force are not equal to zero how is this possible?
It's not possible. Acceleration is defined as a change in velocity, so if the speed is constant, the acceleration is zero. If the acceleration is zero, so is the net force.
What is acceleration of a Car that is going at a steady speed of 50 mph?
Zero. Acceleration = change in velocity/change in time As you see the conditions are not met for acceleration to be taking place.
How can forces acting on an object be unbalanced?
If the sum of the forces on an object do not equal zero, then the object will experience acceleration.
Can a stationary object have a non zero angular acceleration?
no
What is necessary for an object to be in complete rotational and translational equilibrium?
When the vector sum of all the forces acting on a body of mass is zero, the body has zero acceleration (that is, the body's centre of mass moves with constant velocity).In a similar fashion, if the net torque on a body is zero, the body has zero angular acceleration (that is, the body's angular velocity remains constant). This is the condition for rotational equilibrium.
Can acceleration vary with time when acceleration is zero?
If acceleration varies with time, it can of course AT ONE PARTICULAR INSTANT be equal to zero. However, it can't both change over time and remain at zero all the time.
What are the conditions for equilibrium?
The two conditions of equilibrium are: 1. Concurrent Equilibrium the sum of vector forces through a point is zero. 2. Coplanar equilibrium, the sum of forces in a plane is zero and the sum of the torques around the axis of the plane is zero. These two conditions are similar to Ohms Laws in Electricity: Ohms Node Law the sum of the currents at a node is zero and Ohms Voltage law, the sum of the voltages around a loop is zero. These equilibrium conditions reflect the Quaternion mathematics that controls physics. Quaternions consist of a scalar or real number and three vector numbers. Equilibrium is the Homogeneous condition of a quaternion equation: the sum of the scalars or real numbers must be zero AND the sum of the vector numbers must also be zero. Thus there are TWO Conditions for Equilibrium. However if we were to use quaternions as nature does, then Equilibrium would be simplified to the zero quaternion condition.
What is acceleration when force acted on the object is equal from both sides?
The acceleration is zero, since the net force (or total force) is zero: the acceleration on one side cancels out the acceleration on the other. Imagine pushing your hands together. Equal and opposite forces cancel out, and your hands remain in the middle.
Is acceleration due to gravity act on a body resting on a table zero?
no,but the table exerts an equal & opposite force so net force is zero.
A car is moving with constant speed and yet the acceleration and net force are not equal to zero how is this possible?
It's not possible. Acceleration is defined as a change in velocity, so if the speed is constant, the acceleration is zero. If the acceleration is zero, so is the net force.
When can you have no acceleration?
To make acceleration equal zero. The velocity must be constant. For example, if velocity is constant at 10 m/s^2 its acceleration is zero. The same is true if velocity is 0 m/s^2.
What is acceleration of a Car that is going at a steady speed of 50 mph?
Zero. Acceleration = change in velocity/change in time As you see the conditions are not met for acceleration to be taking place.
What is the net force when acceleration is zero?
This is a good question. We can relate force and acceleration using the equation F=ma, where m is mass. If the net force, F is zero, that means that either the mass or the acceleration has to be zero so that the equation is true. All objects have mass, so m can't be zero. That means that a has to equal zero in all cases. It is also important to note that acceleration is how fast an object is speeding up or slowing down. An object may be moving and have zero acceleration, if it's velocity is constant. Hope this helps.
If a box has equal and opposite forces acting on it will the box accelerate?
No. To have an acceleration, you need a non-zero NET FORCE. That is, the sum of all objects acting on the box must not be equal to zero.
How can forces acting on an object be unbalanced?
If the sum of the forces on an object do not equal zero, then the object will experience acceleration.
