Force
Force: Overview
In this topic, we will learn some common forces in mechanics. It also explains constant forces in detail with examples.
Important Questions on Force
A monkey is descending from the branch of a tree with constant acceleration. If the breaking strength is 75% of the weight of the monkey, the minimum acceleration with which monkey can slide down without breaking the branch is
A lift is moving down with acceleration a. A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the ground are respectively –
Give the relative strength of the four forces in nature
Explain the various forces in nature. What are their characteristics? Give their relative strengths.
What is one kilogram weight ? How is it is related to newton ?
When the momentum equation for a moving body changes to its relativistic form?
The relativistic equation of momentum of a moving body of mass and velocity changes to if:
If is the speed of light, the relativistic momentum equation of a body of mass that is moving with a velocity is given as:
Give two examples of non-inertial frame of reference.
Newton's law of motion is applicable in non-inertial frame of reference.
The momentum of a system of particles is always conserved. True or false?
The momentum of a particle is . What is the angle between the force acting on the particle and the momentum ?
Tangential reaction force is a type of contact force.
What is tangential reaction force? Explain with an example.
The internal action and _____ between different parts of a body do, however, sum to zero.
Wind energy, geothermal energy and biomass are derived from _____ energy.
Give reason:
Mahesh rolled a marble on the floor. After some time the marble stopped moving.
