A force is applied to a block on a frictionless inclined surface as shown in the diagram. What magnitude force is necessary to keep the block from sliding down the incline? The mass of the block is 11.3 kg and the angle of incline is 29.6 degrees. What is the magnitude of the force?

The given system of knotted cords (label the left knot as J and the right knot as K) supports the indicated weights.  a) What is the tension TA in cord A? b) What is the tension TB in cord B? c) What is the tension TC in cord C?   please explain the solution in full details

Consider that the trunk has mass M travels at a constant velocity along a frictionless inclined and the angles involved are θi and θs, where θs corresponds to the angle with respect to the direction of motion and θi is the angle of the inclined. What are the simplified expressions for the tension on the rope and the normal force on the trunk in terms of M, g and the angles?

The sprinter from problem 9 is now out of the blocks and running. If the coefficient of static friction between the track shoe and the track is 0.80, and the sprinter exerts a vertical force of 2000 N downward on the track, what is the maximum horizontal force he can generate under his shoe?

Three cables are used to hold a hot-air balloon in place. The tension in the cable AD is 658 N.   What is the tension in the cable AB? Enter using 3 significant figures.         What is the tension in the cable AC? Enter using 3 significant figures.         What is the vertical force V exerted by the balloon at point A? Enter using 4 significant figures.

What is the force required to overcome the static friction of a 78kg sled on fresh snow? The friction coefficient of the sled on snow is 0.05.

A uniform plank with length 2 m, mass 30k is supported by three ropes as shown by the blue vectors in the above figure. If the person's weight is 700 N, d = 0.5 m from the left, find tension T1,T2 and T3

If the forces are in equilibrium, what is the magnitude of F1? (Please provide a step by step solution and refer to the illustration below)

In a traction apparatus, three cords pull on the central pulley, each with magnitude 22.0 N, in the directions shown in the figure. What is the sum of the forces exerted on the central pulley by the three cords? Give the magnitude and direction of the sum.

A wedge assembly, composed of wedges X and Y, is designed to lift crate W whose weight is 1345 N, as shown in the figure below. What will be the maximum force P that can be applied before movement begins if the coefficient of friction for all surfaces of contact is 0.0875? Draw all necessary free-body diagrams and indicate the direction of impending motion. Given: C° = 13° D° = 14° E° = 15°