speed of a body spinning about an axis increased from rest to 100 rpm in 5 sec if a constant torque is then removed and the body comes to rest in 100 sec due to friction. calculate the frictional torque​

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!

there are no contact forces mentioned on the list of choices that you've provided.