A vehicle moves safe on a rough, curved and unbanked road. Thena) The direction of static friction is radially out wardsb) The direction of static friction is radially inwardsc) The direction of kinetic friction is tangential to curved pathd) Static friction does not exist
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a
a and b are correct
b
c and d are correct
c
b and c are correct
d
a and c are correct
answer is C.
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Detailed Solution
When a vehicle moves on a rough unbanked road without sliding only radially inward static friction can supply the neccessary centripetal force.Rolling friction always opposes the motion.