Questions
A car enters a curved road in the form of a quarter of a circle, the path length being 200 metre .Its speed at the entrance is 18 kmh-1 but when it leaves, it increases to 54 kmh-1. If the car is travelling with constant acceleration along the curve, the acceleration when the car leaves the curved road is
detailed solution
Correct option is C
aT=v2−u22ℓ=(15)2−(5)22(200)=0.5ms−2aC=vfinal r=(15)2400π ∵l=2πr4=200⇒aC=1.8ms−2⇒a=(1.8)2+(0.5)2⇒a=1.9ms−2Talk to our academic expert!
Similar Questions
A body is moving on a rough horizontal table in a circular path being tied to a nail by a string. While the body is in motion, match the quantities in column-A with their description in column-B.
Column-A | Column-B | ||
(a) | Acceleration of body | (p) | Changes direction but constant in magnitude |
(b) | Friction force on body | (q) | Changes magnitude but constant in direction |
(c) | Angular momentum of the particle | (r) | Changes direction as well as magnitude |
(d) | Normal force by table | (s) | Direction as well as the magnitude is constant |
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