Expression for kinetic energy of a moving body
Consider a body of mass 'm' which is initially at rest. When a force 'F' is applied on the body, let it start moving with a velocity 'V' and cover a distance 's'. The force produces acceleration 'a' in the body. The force 'F' does work when it moves the body ..
Consider a body of mass 'm' which is initially at rest. When a force 'F' is applied on the body, let it start moving with a velocity 'V' and cover a distance 's'. The force produces acceleration 'a' in the body. The force 'F' does work when it moves the body ..Question 31
Question: A certain force exerted for 1.2 seconds raises the speed of an object from 1.8 m/s to 4.2 m/s. Later the same force is applied for 2 seconds. How much does the velocity change in 2 seconds? Answer: Initial velocity (u) = 1.8 m/s. Final v..
Question: A certain force exerted for 1.2 seconds raises the speed of an object from 1.8 m/s to 4.2 m/s. Later the same force is applied for 2 seconds. How much does the velocity change in 2 seconds? Answer: Initial velocity (u) = 1.8 m/s. Final v..Newtons Second Law
Newton's Second Law of Motion - The rate of change of momentum of a body is proportional to the applied force and takes place in the direction in which the force is applied. For a constant mass system We have already learnt that the rate o..
Newton's Second Law of Motion - The rate of change of momentum of a body is proportional to the applied force and takes place in the direction in which the force is applied. For a constant mass system We have already learnt that the rate o..Work, Energy and Power Summary
Summary - The essential conditions to be satisfied for work to be done are: Some force must act on the object. The point of application of force must move in the direction of force. W = F x s SI unit of work is joule. Energy is the capacity to do wo..
Summary - The essential conditions to be satisfied for work to be done are: Some force must act on the object. The point of application of force must move in the direction of force. W = F x s SI unit of work is joule. Energy is the capacity to do wo..Pressure
When a force is applied on a surface in a direction perpendicular to the surface, the force is called thrust. Pressure on a solid surface is the thrust per unit area of the surface. Pressure is a scalar quantity. The SI unit of Pressure is N m..
When a force is applied on a surface in a direction perpendicular to the surface, the force is called thrust. Pressure on a solid surface is the thrust per unit area of the surface. Pressure is a scalar quantity. The SI unit of Pressure is N m..Paramagnetic Substance
Paramagnetic substance are attracted by a magnet very feebly. In a sample of a paramagnetic material, the atomic dipole moments initially are randomly oriented in space. When an external field is applied, the dipoles rotate into alignment with field as shown The vector sum of the individu..
Paramagnetic substance are attracted by a magnet very feebly. In a sample of a paramagnetic material, the atomic dipole moments initially are randomly oriented in space. When an external field is applied, the dipoles rotate into alignment with field as shown The vector sum of the individu..See what our Users say :
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