An insect is at the bottom of a hemispherical ditch of radius 1 m

PHYSICS · Single correct · CBSE · Physics · Laws of Motion · Laws of Motion

Problem

An insect is at the bottom of a hemispherical ditch of radius 1 m. It crawls up the ditch but starts slipping after it is at height

h

from the bottom. If the coefficient of friction between the ground and the insect is 0.75, then

h

is: (

g = 10 \text{ ms}^{-2}

) (1) 0.80 m (2) 0.60 m (3) 0.45 m (4) 0.20 m