A simple pendulum having a bob of mass m
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A simple pendulum having a bob of mass 'm' is suspended from the ceiling of a car used in a stunt film shooting. The car moves up along an inclined cliff at a speed v and makes a jump to leave the cliff and lands at some distance. Let R be the maximum height of the car from the top of the cliff. The tension in the string when the car is in air is
(a) mg
(b) mg-mv²/r
(c) mg+mv²/r
(d) zero