Two bodies A and B have their masses m and 2m respectively and velocities as to 2v and v respectively. a) Which of the two has more inertia? State why? b) When a carpet is beaten with a stick, the dust comes out. Why?
Answers
Explanation:
since mass of B is more inertia of B is more. As,
I=MR²
Answer:
a. B has more inertia.
b. Motion.
Explanation:
With reference of inertial frame of reference.
We know,
It requires more force to stop a truck in comparison to a car, when both have same velocity. In short, truck moving with same velocity as of car is having more inertia( & mass ).
From here, it can be concluded that larger mass has larger inertia.
Inertia of a body is directly proportional to mass of that body.
Since, here, B has greater mass ( 2m ), B has more inertia.
Since, it is moving for a person standing outside, it's in a the state of motion. ( inertia of motion ).
Inertia is a property which says : If a body is in motion( or rest ) then it will remain in motion( at rest ), till effected by any external force.
Therefore,
When a carpet is beaten with a stick, carpet gets compressed, whereas sticked particles which were at rest are remain at rest and thus dust comes out of the carpet.