What happens to the acceleration? match each change with the appropriate change to the magnitude of the acceleration of the ball a.

a acceleration, a, stays the same.
b acceleration, a, doubles.
c acceleration, a, quadruples.
d acceleration, a, quarters.
e acceleration, a, halves.

a b c d ethe radius of the circle halves and the period of rotation stays the same.
a b c d ethe period halves and the speed halves. (the radius changes as necessary.)
a b c d ethe period of rotation doubles and the radius stays the same.

Explanation:

(a) On circular path, an object moves with centripetal acceleration which is given by :

v is the velocity of the object

r is the radius of circular track

Acceleration is directly proportional to the radius of track and inversely proportional to the period of rotation. If the radius of the circle halves and the period of rotation stays the same.

i.e. acceleration of ball becomes half. The correct option is (E).

(b) The acceleration of the ball in linear motion is given by :

If the period halves and the speed halves, so the acceleration stays the same. The correct option is (A).

(c) Acceleration,

If the period of rotation doubles and the radius stays the same, the acceleration is given by :

So, acceleration becomes quarters. The correct option is (D).

the higher the current the higher the mag field around it the higher the influence on the compass

the maxium height is 34m/s