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- 13 - F = -8 i +6 j A force with N position vector r = 3 i +4 j acts on a particle whose m. What is the torque acting on the particle relative to the centre? A) 30 N.m B) 40 N.m C) 50 N.m D) 60 N.m E) 10 N.mA wrench exerts a torque of 50 NM on a hexagonal bolt. If the force on the end of the wrench is 50 N and it makes an angle of 45 degrees with respect to the handle, what is the distance or moment arm from the center of the bolt to the point at which the force is applied? A)0.707m B) 0.49m C) 1.41m d)1 m e) none3. An object has two rods attached to form a + sign. Each rod is 20-cm long and has a mass of 0.500 kg. A solid 0.2-kg sphere is attached at the end of each rod, of radius 5- cm. A) Calculate the moment of inertia of the object. B) If the device is initially at rest, and a torque of 3.00 m-N is applied to the object for 10.0 seconds, what will its angular momentum be? C) Use this and the answer to A) to calculate its angular speed, its average angular speed, and therefore the total angle it has rotated. D) What will its kinetic E) Show that this is equal to the work that the torque did. energy be?