Rotational and circular motion

Question 1

Sign of anticlockwise displacement?

Answer 1

Anticlockwise displacement is positive

Question 2

Sign of clockwise displacement?

Answer 2

Clockwise displacement is negative

Question 3

SI unit of Angular Displacement?

Answer 3

SI unit of Angular displacement is radian

Question 4

Relations of units?

Answer 4

Relations of units of Angular displacement 1rev=360⁰=2π rad

Question 5

Relation between linear and angular displacement?

Answer 5

is S=r()

Question 6

Relation between linear and angular velocity?

Answer 6

is v=rw sin ()

Question 7

Relation between linear and angular acceleration?

Answer 7

is a=r@

Question 8

Centripetal force acts on?

Answer 8

the object

Question 9

Force of the revolving body is directed?

Answer 9

inward

Question 10

Velocity of the object is?

Answer 10

tangent to the circle

Question 11

The centripetal acceleration is equal to?

Answer 11

a = v²/r

Question 12

Relation between centripetal acceleration and angular velocity is?

Answer 12

a=-w²r

Question 13

Relation between centripetal force and angular velocity?

Answer 13

F= mr/w²

Question 14

What is the reaction of centripetal force?

Answer 14

Centrifugal force

Question 15

What does centrifugal force do?

Answer 15

Move the body away from the circle