Rotational dynamics 2 - quizizz
?
1 like?152 views
This document contains a 5 question quiz on rotational dynamics. The questions cover the mathematical expression for centripetal force, calculating centripetal acceleration given mass, velocity and radius, the direction of centrifugal force, comparing angular velocities of objects rotating with different tangential velocities and radii, and calculating angular displacement given angular velocity and time.
Rotational dynamics 2 - quizizz
- 1. 9/5/2021 Rotational Dynamics - 2 | Print - Quizizz https://quizizz.com/print/quiz/609ca427b2495b001dd6d7ac 1/3 NAME : CLASS : DATE : 1. 2. 3. 4. Rotational Dynamics - 2 5 Questions The mathematical expression for centripetal force is ______ a) mv2/r b) mv/r c) v2/r d) mv3/r A body of mass 10 kg, is moving with a velocity of 5 m/s in a circle of radius 5 m, what is the centripetal acceleration of the body? a) 5 m/s2 b) 25 m/s2 c) 0.5 m/s2 d) 50 m/s2 The centrifugal force always acts _____ a) Towards the center b) Away from the center c) In tangential direction d) Outside of the plane of motion A ball is being rotated in a circle of radius 5 m with a constant tangential velocity of 20 m/s. A stone is also being rotated in a circle of radius 4 m with a constant tangential velocity of 16 m/s. Which one of the following choices is true about both the circular motions? a) Both have same angular velocity b) Both have different angular velocity c) Angular velocity of ball > angular velocity of stone d) Angular velocity of stone > angular velocity of ball
- 2. 9/5/2021 Rotational Dynamics - 2 | Print - Quizizz https://quizizz.com/print/quiz/609ca427b2495b001dd6d7ac 2/3 5. The angular velocity of a stone being rotated is 11 rad/s. What is the angular displacement covered in 0.5s? a) 5.5 rad b) 0.55 rad c) 55 rad d) 0.5 rad
- 3. 9/5/2021 Rotational Dynamics - 2 | Print - Quizizz https://quizizz.com/print/quiz/609ca427b2495b001dd6d7ac 3/3 Answer Key 1. a 2. a 3. b 4. a 5. a