Can an object have zero acceleration with only one force acting on it?
Can an object have zero acceleration with only one force acting on it?
If only one force acts on an object, the object cannot have zero acceleration (Newton’s second law). It is possible for the object to have zero velocity, but only for an instant. For example (if we neglect air resistance), a ball thrown up into the air has only the force of gravity acting on it.
Is a ball in equilibrium at its highest point?
1 Expert Answer Once the ball leaves the person’s hand, it is never in equilibrium until it lands on the ground or the person catches it again. In particular, it is definitely not in equilibrium when it reaches the top of its path, where the velocity is momentarily zero.
Why can’ta body be in equilibrium due to single force?
Explanation: A body cannot be in the state of equilibrium if only a single force acts on it because we need two or more forces equal in magnitude but opposite in direction to cancel out each other.
Can a body be in equilibrium if it is in motion?
Yes, a body can be in equilibrium if it is in motion. We know that a body is said to be in equilibrium if the net force acting on it is zero. By the second law of motion, we know that the acceleration in such bodies is zero.
What is the acceleration of free fall class 9?
When objects fall towards the Earth under the effect of gravitational force alone, then they are said to be in free fall. Acceleration of free fall is 9.8 m s−2, which is constant for all objects (irrespective of their masses).
What is the formula of free fall?
Free fall means that an object is falling freely with no forces acting upon it except gravity, a defined constant, g = -9.8 m/s2. The distance the object falls, or height, h, is 1/2 gravity x the square of the time falling. Velocity is defined as gravity x time.
What must be true if an object is in equilibrium?
For an object to be in equilibrium, it must be experiencing no acceleration. This means that both the net force and the net torque on the object must be zero.
What does it mean when object is at equilibrium?
A very basic concept when dealing with forces is the idea of equilibrium or balance. If the size and direction of the forces acting on an object are exactly balanced, then there is no net force acting on the object and the object is said to be in equilibrium.
What are the two conditions for equilibrium?
For an object to remain in equilibrium, two conditions must be satisfied – both the net force and the net torque must be equal to zero. An example of an object in equilibrium is a rod that is free to rotate about a hinge at one end.
Which condition is not true for the equilibrium in free body diagram?
2. Which one is not the condition for the equilibrium in free body diagram for calculation of the normal forces, consider all forces to be straight and linear? Explanation: For the equilibrium in the three dimensional system of axis we have all the conditions true as, ∑Fx=0, ∑Fy=0 and ∑Fz=0.
What conditions must be present for translational equilibrium?
Im sure this stuff must be present in your course material. (b)rotational equilibrium of a rigid body? 2) If these conditions for equilibrium are satisfied, is the rigid body necessarily in static equilibrium?…PHF Helper.
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What is the condition for rotational equilibrium?
An object is in rotational equilibrium if the velocity of its rotation is constant. An object that is not rotating or an object that is rotating in one direction a constant rate would be considered in rotational equilibrium. To be in rotational equilibrium, the net torque acting on the object must be zero.