a mass is at rest with respect to the lab frame, while a frictionless turntable rotates beneath it. the frequency of turntable is w and mass is located at radius r. In the frame of turntable , find the forces acting on mass and verify that F=ma

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Calculate the weight of the following objects on earth (assume g=10N/kg) a)12kg b)500g c)20g d)what is the mass and weight of each of the objects if they were placed on mars? (g mars =3.8 N/kg)