8. A
2.0 m
A 1.0 kg box slides without friction around the
loop-the-loop apparatus as shown in the
diagram. If the object starts from rest at point A,
and the radius of the loop is 0.75 m, what is the
speed of the box at point B?

6.26 m/s

Explanation:

From the given information:

Using the conservation of Energy;

M.E at A =M.E at B

Replacing the values given in the equation:

i think if it were me i whould divide 300 dide 15

step-by-step explanation:

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.