Answer:2.5 Nm clockwise
Explanation:
Given
Torque exerted by Elephant [tex]\tau _1=5.3\ Nm(CW)[/tex]
Torque exerted by rhino [tex]\tau _2=2.8\ Nm(ACW)[/tex]
Therefore Net torque is Algebraic sum of two torques
[tex]\tau _{net}=\tau _1+\tau _2[/tex]
Considering Clockwise to be Positive
[tex]\tau _{net}=5.3-2.8[/tex]
[tex]\tau {net}=2.5\ Nm[/tex]
Therefore net torque on Merry-go-round is 2.5 Nm clockwise