Chapter 01 : Physics: XII : Circular Motion:Test 4 : self study
Marks 20
Time 40 min
1.
Prove the relation V̅ = W̅ X r̅ , where symbols have
their usual
meanings 2M
2. Define centripetal force. Give its any four examples. 3M
3. What is conical Pendulum? Obtain an expression for linear speed
of bob of conical pendulum 3M
4. Show that the difference in the tensions at highest and
lowest point is 6mg in vertical circular motion. 2M
5. Derive an expression for maximum safety speed with which
vehicle should move along a curve horizontal road. 2M
6. A flat curve on highway has a radius of curvature 400m. A
car rounds the curve at speed of 90 km/hr. What is the minimum value of the
coefficient of friction that will prevent car from sliding.g= 9.8m/s2
3M
7.
A body of mass 2Kg is tied to the
end of the string 2m long and revolved in a horizontal circle. If the breaking
tension of string is 400N calculate the maximum velocity of
body. 2M
8.
If a car is having mass 200 Kg can move with optimum speed 5 m/s on a circular
banked road radius 20 m. 3M
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