Question

A smooth circular groove has a smooth vertical wall as shown in figure. A block of mass m moves against the wall with a speed v. Which of the following curve represents the correct relation between the normal reaction on the block by the wall (N) and speed of the block (v)?

• A.
• B.
• C.
• D.

Answer 1

Answer: (A)

Answer 2

$N=\frac {mv^2}{r}$
Therefore, the graph given in option A suits the best for the above relation.

So, the correct option is (A).