Question

Frictionless table question

Answer 1

Answer:

Explanation:

Two blocks are in contact on a frictionless table. One has a mass m and the other 2m. A force F is applied on m.
In the two cases respectively the ratio of force of contact between the two blocks will be:
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Medium
Solution
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Correct option is B)
If F is the applied force then acceleration of the system is
2m+m
F
​
=
3m
F
​


Now when we apply the force from the left, the force applied on the block m is
3m
F
​
m=
3
F
​
. This will be the force in the contact.

When we apply the force from the right from on the block will be
3m
F
​
2m=
3
2F
​
, this will be the force on the contact then.

So the ratio is
3
F
​
:
3
2F
​
=1:2

Hence,

option B is correct answer.