Two masses hang freely over a pulley. their masses are 6.5 kg and 11 kg. find the acceleration of each mass and the tension in the rope if friction is neglected.

Accleration of masses =

Tension in rope = 80.158 Newtons

Explanation:

Applying Newtons second law to both the masses we have

For 6.5 kg  mass we have

Similarly for 11 kg mass applying Newton's second law yields

Now since both the masses are connected by same string and the pulley is friction less the acceleration of both the masses shall be same and the tension in the string shall have unique value

thus solving equation i and ii by adding them we get

Using this value of accleration in any equation we obatin the value of tension as

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j