Advertisements
Advertisements
Question
Give one example each of inertia of rest and inertia of motion.
Advertisements
Solution
A book lying on a table will remain placed at the table unless it is displaced by some external force. This is an example of inertia of rest.
A ball rolling on the ground will continue to roll unless the external force, the force of friction between the ball and the ground stops it.
APPEARS IN
RELATED QUESTIONS
Give the magnitude and direction of the net force acting on a drop of rain falling down with a constant speed.
What is the other name of Newton’s first law of motion ?
Define one newton force.
An object of mass 2 kg is sliding with a constant velocity of 4 m/s on a frictionless horizontal table. The force required to keep this object moving with the same velocity is :
Explain the following :
After alighting from a moving bus , one has to run for some distance in the direction of bus in order to avoid falling .
How does Newton's second law of motion differ from the first law of motion?
The greater is the __________ the greater is the inertia of an object.
What do you mean by inertia of rest?
A mass of 2 kg is suspended with thread AB (Figure). Thread CD of the same type is attached to the other end of 2 kg mass. Lower thread is pulled gradually, harder and harder in the downward directon so as to apply force on AB. Which of the threads will break and why?
An insect is at the bottom of a hemispherical ditch of radius 1 m. It crawls up the ditch but starts slipping after it is at height h from the bottom. If the coefficient of friction between the ground and the insect is 0.75, then h is ______. (g = 10 ms−2)
