A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45°, the speed of the car is:
20 ms-1
30 ms-1
5 ms-1
10 ms-1
As we learnt in
Bending a Cyclist -
From figure.
(i)
(ii)
(i) & (ii)
V = velocity
r = radius of track
angle with which cycle leans
- wherein
* radius of curve is small.
* velocity of the cyclist is large.
Option 1)
20 ms-1
Incorrect
Option 2)
30 ms-1
Correct
Option 3)
5 ms-1
Incorrect
Option 4)
10 ms-1
Incorrect