Physics (AS & A Level) · Feb / March 2023 · Paper 12 · Question 11

A satellite uses two thrusters to adjust its motion in space. Each thruster exerts a force of 40 N on the satellite. The line of action of each force is a perpendicular distance of 2.3 m from the centre of gravity of the satellite. These two parallel forces act in opposite directions. [diagram of satellite with two thrusters, each exerting 40 N, at perpendicular distance 2.3 m from centre of gravity] What are the magnitudes of the torque and the resultant force acting on the satellite due to the two thrust forces?

1. Atorque 92 N m, resultant force 0 N
2. Btorque 92 N m, resultant force 80 N
3. Ctorque 180 N m, resultant force 0 N
4. Dtorque 180 N m, resultant force 80 N

As printed in the paper