Physics
A student has four balls - table tennis ball, tennis ball, cricket ball and a football. The correct ascending order of inertia is :
- table tennis ball, tennis ball, football, cricket ball
- cricket ball, football, tennis ball, table tennis ball
- table tennis ball, football, cricket ball, tennis ball
- football, cricket ball, table tennis ball, tennis ball
Answer
table tennis ball, tennis ball, football, cricket ball
Reason — As the property of inertia is because of the mass of the body. Greater the mass, greater the inertia. Ascending order of mass is table tennis ball < tennis ball < football < cricket ball, hence ascending order of inertia is table tennis ball < tennis ball < football < cricket ball.
Related Questions
A force is needed to —
- change the state of motion or state of rest of the body
- keep the body in motion
- keep the body stationary
- keep the velocity of body constant
A tennis ball and a cricket ball, both are stationary. To start motion in them —
- A less force is required for the cricket ball than for the tennis ball
- A less force is required for the tennis ball than for the cricket ball
- Same force is required for both the balls
- Nothing can be said.
Which one of the following is not an example of inertia of rest?
- When a train suddenly starts moving forward, the passenger standing in the compartment tends to fall backwards.
- When a hanging carpet is beaten with a stick, dust particles start falling out of it.
- On shaking the branches of a tree, the fruits fall down.
- When a passenger jumps out of a moving train, he falls down.
An athlete often runs before taking a long jump. This is an example of :
- Newton's first law
- inertia of rest
- inertia of motion
- both (a) and (c)