KinematicsHard
Question
A stone is projected vertically upto reach maximum height h. The ratio of its KE to its potential energy at a height (4/5) h, will be:-
Options
A.5 : 4
B.4 : 5
C.1 : 4
D.4 : 1
Solution
At a height 
,the potential energy = mg × 
Total energy = mgh
∴ KE at that height = mgh -
mgh
=
mgh
Ratio of Ke and PE =mgh/
mgh 1: 4
,the potential energy = mg × Total energy = mgh
∴ KE at that height = mgh -
mgh=
mghRatio of Ke and PE =
mgh/ mgh 1: 4Create a free account to view solution
View Solution FreeMore Kinematics Questions
A stone falls freely under gravity. It covers distances h1, h2 and h3 in the first 5 seconds, the next 5 seconds and the...Acceleration versus velocity graph of a particle moving in a straight from rest as shown in figure. The corresponding ve...In equilibrium the average velocity of gas molecules is...Let [ε0] denote the dimensional formula of the permittivity of the vacuum and [μ0] that of the permeability of...A car travels 6km towards north at an angle of 45o to the east and them travels distance of 4km towards north at an angl...