How measurement of force is obtained from the second law of motion? Establish a relation between absolute and gravitational units of force.
Answers
Answer:
Newton's second law of motion states that the acceleration of a system is directly proportional to and in the same direction as the net external force acting on the system, and inversely proportional to its mass. ... If the only force acting on an object is due to gravity, the object is in free fall.
Explanation:
The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time. If the mass of the object is constant, this law implies that the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object.
Concepts related to force include: thrust, which increases the velocity of an object; drag, which decreases the velocity of an object; and torque, which produces changes in rotational speed of an object. In an extended body, each part usually applies forces on the adjacent parts; the distribution of such forces through the body is the internal mechanical stress. Such internal mechanical stresses cause no acceleration of that body as the forces balance one another. Pressure, the distribution of many small forces applied over an area of a body, is a simple type of stress that if unbalanced can cause the body to accelerate. Stress usually causes deformation of solid materials, or flow in fluids.
Answer:
Say,a body of mass (m) moves uniformly in certain direction with the velocity (u) and after (t) second , due to application of an external force (F) in same direction its final velocity becomes (v)
(t) second=mv-mu
1 second = mv-mu/t
mv-mu/t=m(v-u)/t
ans:v-u/t
Explanation:
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