Work, Power and EnergyHard
Question
A body is allowed to slide down a frictionless track freely under gravity the track end in a semicircular shaped part of a diameter D. The height (minimum) from which the body must fall so that it completes the circle, is
Options
A.
B.
C.
D.
Solution
For the body to reach point B, the body must have least velocity of
at A.So for a body falling from height h.Velodcity =
= 
⇒ 2gh = 2g 
h =
Create a free account to view solution
View Solution FreeMore Work, Power and Energy Questions
In the experiment of photoelectric effect, collector is kept at +2 volt potential w.r.t. emitter. If energy of each phot...A graph of potential energy V ( x ) verses x is shown in figure. A particle of energy E0 is executing motion in it. Whic...Three masses $200\text{ }kg,300\text{ }kg$ and 400 kg are placed at the vertices of an equilateral triangle with sides 2...The kinetic energy of a particle continuously increase with time. Then...A simple pendulum is oscillating without damping. When the displacement of the bob is less than the maximum, its acceler...