Uniform Circular Motion 1. What is the formula of centripetal force? F= (m x v)/rF= (m x v x v)/rF= ma no ideaQuestion 1 of 21 2. Increasing the rate of angular velocity requires higher centripetal force? FALSETrue Maybe None Question 2 of 21 3. Name the 3 applications of circular motion Centrifuges Speed governors Satellites All of the above Question 3 of 21 4. What is the name of the force which is required to maintain an object in a circular motion? Angular force Angular velocity Centripetal force Centripetal acceleration Question 4 of 21 5. What is the formula of centripetal acceleration? A= r x Omega x OmegaA= (v x v)/RA= (Omega x Omega)/Rall of the aboveQuestion 5 of 21 6. Which of the following is a factor which affects centripetal force? Mass of the object Angular velocity of the object Radius of the path All of the above Question 6 of 21 7. Define centripetal acceleration The change of angular velocity with time The constant velocity of a body in the direction away from net force The acceleration of the body in the direction of the net force hence towards the center. None of the aboveQuestion 7 of 21 8. SI UNIT of angular velocity is? m/sKm/h Rad/sRads Question 8 of 21 9. When the speed of a body moving in a circular path is constant the body is said to be moving with uniform circular motion. True or False? False True Maybe NoneQuestion 9 of 21 10. Centripetal force is? Directly proportional to mass of the body Directly proportional to speed (v) of the body Inversely proportional to radius of the circular path All of the above Question 10 of 21 11. The change of angular displacement with time is called? Angular velocity Angular speed Acceleration None Question 11 of 21 12. The heavier the object i.e. stone the more the centripetal force it shall require to keep it moving in a circular path? False Maybe True none Question 12 of 21 13. What is the condition that makes skidding to occur? tan (Theta) < (coefficient of friction, u) (coefficient of friction, u) = tan (Theta) tan (Theta) > (coefficient of friction, u) None Question 13 of 21 14. What is the formula of speed? V = D/tV = r x OmegaV = Omega / tNone Question 14 of 21 15. A longer radius path will require a larger centripetal force? True Maybe False None Question 15 of 21 16. Which of the following is not an example of circular motion? A car rounding a level circular bend An aircraft braking A driver rotating the car wheel A cyclist moving round a circular track Question 16 of 21 17. What is the formula of angular velocity? (Omega) Omega = v/rOmega = (2 x pi)/TOmega = 2 x pi x FAll of the above Question 17 of 21 18. SI UNIT of angular displacement is? M Km Radians S Question 18 of 21 19. What is the formula of time taken for 1 complete displacement? T = D/sT= 1/FT = V/RNoneQuestion 19 of 21 20. For a body whose motion is in a vertical circle, its tension will be maximum when? i.e. a ball tied to one end of a string) Ball is at the highest point Ball is at its lowest pointBall is at zero position None Question 20 of 21 21. What is the formula to calculate the minimum Velocity for a body which is in a vertical motion? Vmin = Omega x Omega x r Vmin = (Omega x Omega )/rVmin = Square root ( r x g)None Question 21 of 21 Loading...
