Teaching HTET PGT Level 3 - 2024 Mock Test Physics Work Power and Energy Conservation of Mechanical Energy
A particle of mass m is placed at the highest point of a frictional hemispherical surface. If the particle is allowed to slide down, the angular displacement from the vertical at which it will leave the surface will be -
1
\(\cos^{-1}\left(\dfrac{1}{2}\right)\)
2
\(\cos^{-1}\left(\dfrac{1}{3}\right)\)
3
\(\cos^{-1}\left(\dfrac{2}{3}\right)\)
4
\(\sin^{-1}\left(\dfrac{1}{3}\right)\)