A horizontal force of 224 N is applied to a stationary wooden box in one direction and a  731 N horizontal force in the opposite direction.  What additional force is needed for the box to remain stationary. (Answer to 1 decimal place)

An applied force of 74 N is used to accelerate an object to the right across a frictional surface.  The object weighs 43.2 N and encounters of friction force of 13 N.  What is the coefficient of friction [round your final answer to three decimal places]?

a dog weighing 54.3 N sits on a plank that makes a 25.0 degree angle with the ground. Find the components of the dog's weight force parallel and perpendicular to the plank.

A block of mass m = 2.90 kg is pushed a distance d = 7.80 m along a frictionless horizontal table by a constant applied force of magnitude F = 16.0 N directed at an angle ? = 24.0° below the horizontal as shown in the figure below. A block labeled m is on a horizontal surface. An arrow labeled vector F points downward and to the right at an angle ? above the horizontal, and acts upon the upper left corner of the block. A faded image of the block is a distance d to the right of the block. (a) Determine the work done on the block by the applied force. J(b) Determine the work done on the block by the normal force exerted by the table. J(c) Determine the work done on the block by the force of gravity. J(d) Determine the work done by the net force on the block.