Physics, asked by kumaripalak05, 1 year ago

The question is mentioned in the image.

Attachments:

Answers

Answered by alvincarter

Answer should be C) mg/4
Let, the mass of rod is M
and mass of part of rod on table be m.
Then,
We can say, if mass is uniformly distributed
that, M/m = L / (L/4)
so, we get m = M/4
Now, gravity acting on that small part is
mg, hence Normal reaction will be mg.
Now substituting value of m,
we get, N = Mg/4

kumaripalak05: I think that will be the case when road is attached to string. When the string is cut the normal reaction will be different.

alvincarter: No, when string is attached there will be a tension force of string on the rod. But, when string is cut, it will normally obeys Force of gravitation and nothing much. If you still have doubt then you can ask! :)

kumaripalak05: Thanks i got it

Previous Question

Next Question

Similar questions

Math, 7 months ago

6. The father's age is six times his son's age. Four years hence, the age of the father will be four times his son's age. The present ages, in years, of the son and the father are, respectively पिता कीआयु उसके पुत्र की आयु छह गुना है। चार साल बाद पिता की उम अपने बेटे की उम्र की चार गुना होगी। पुत्र और पिता की वर्तमान आयु वर्षों में ज्ञात कीजिए?

Math, 7 months ago

Express Following numbers as product of primes: i) 45 ii) 60.

Physics, 7 months ago

03. The expression for stopping distance d of a vehicles in terms of vo and a is ...

Math, 1 year ago

Can you give cbse class 10 trigonometry hots questions?