Eg.2: DeterminetheareaofAQRSwithverticesQ(2,4,1),R(3 ,-3 ,5)andS(-2,0,2). The cross product can also be used in the consideration of forces that involve rotation, or turning about a point or an axis. The rotational or turning effect of a force is called . E: is the force applied to the lever (or wrench). .. is the distance from the pivot point to the point where the force has been applied. Its tail is at the pivot point and its head at the point where 17: is applied. 6 is the angle between a and 27' \" The unit for torque is the Eg.3: A force of 30 N is used to open a hinged lid on the top of a box. The force is applied 30 cm from the hinge at an angle of 45. Calculate the magnitude of the torque. Adam is trying to get his toboggan home. However, he is not very smart and decides to push it instead of pulling it home. a. If he can push it with a force of 300N at an angle of 86 degrees to the horizontal over a distance of 300m, what is the work that he does? b. He finds out that if he pulls it, things will work much better. If he pulls the rope at an angle of 20 degrees to the horizontal, how much force must he pull the sled with to do the same amount of work? Mark: 15 Three people are pushing on a box. The first person is pushing with ZOON of force in a direction of N30E, the second person is pu$hing with 350N of force in the direction of 082 degrees, and the third is pushing clue west with a force of 120N. a. Draw a diagram representing this situation. b. What is the resultant force, and what direction does it point? c. How does this change if a fourth person pulls this box upwards with a force of 400M