Now lers focus on the descending sphere. Let m be the mass of the sphere, g be t

Question

Now lers focus on the descending sphere. Let m be the mass of the sphere, g be the acceleration due to gravity, T be the magnitude of the force of tension of the string, a be the acceleration of the sphere as it descends, and a be the angular acceleration of the wheel. What is the correct expression for Newton's second law applied to the descending sphere? Select the best answer from the choices provided View Available Hint(s mg + T = ma -mg + T = ma @ mg-T ma @ mg.. Tr=ma Submit Previous Answers Request Answer

Explanation / Answer

As the sphere descends, so the net force must act downwards.

Now, along the vertical, the forces acting on it are:

1) mg <------ acting downwards

2) T <------- acting upwards

So, net force , Fnet = mg - T

Now, using Newton's second Law, net force , Fnet = ma

So, mg - T = ma <--------- answer

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