For an object that’s in static equilibrium which of the following statements must be true? check all that apply.

to calculate the net torque on the object, you must pick the pivot point about the center of mass of the object

the net torque acting on the object must equal zero

friction cannot exert a torque on the object

the net torque on the object does not have to be zero if the net force on the object is zero

the net force on the object does not have to be zero if the net torque on the object is zero