Physics Motion in a Plane Motion of a Vehicle, Centrifugal Force and Rotation of Earth MCQ (Single Correct)

A particle moves along a horizontal circle such that the radial force acting on it is directly proportional to square of time. Then choose the correct option:

A
tangential force acting on it is directly proportional to time
B
power developed by total force is directly proportional to time
C
average power developed by the total force over first t second from rest is directly proportional to time
D
angle between total force and radial force decreases with time

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Text Solution

Verified by Experts
The correct answer is:
CHECK THE SOLUTION.

(b, c, d): a n = kt 2

= kt 2

v = t

a t = = constant

tan φ =

p = F t v

<p> ∝ t.

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