College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

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In Exercise, due to limited work space, you must crawl under the car. The force thus cannot be applied perpendicularly to the length of the wrench, if the applied force makes a 30° angle with the length of the wrench, what is the force required to loosen the drain plug
Exercise
The drain plug on a car's engine has been lightened to a torque of 25 m · N. If a 0.15-m-long wrench is used to change the oil, what is the minimum force needed to loosen the plug