A 3.5 kg block is placed on a surface inclined by θ = 11∘ as shown, and undergoes a horizontal force of F = 77 N. The coefficient of kinetic friction between the surfaces is 0.12. The block is displaced a distance d = 1.2 m along the surface. How much work is done by the applied force F ? (Answer in J.)

You have two vectors: A = 7.27î + 3ĵ and B = 4î - 0.95ĵ + 12k. If vector A represents a force vector and vector B is a displacement vector, what is the magnitude of work done by this force?

Total work with vectors

A-D please!!

(a) A block with a mass m is pulled along a horizontal surface for a distance x by a constant force F at an angle e with respect to the horizontal. The coefficient of kinetic friction between block and table is u. Is the force exerted by friction equal to u, mg? If not, what is the force exerted by friction? (Assume 0 is measured above the horizontal.) This answer has not been graded yet. (b) How much work is done by the friction force and by F? (Don't forget the signs. Use the following as necessary: F for the magnitude of F, g, m, x, 0 and u,) WE = (c) Identify all the forces that do no work on the block. (Select all that apply.) O friction f OF Cos(e) OF sin(0) O mE (d) Let m = 2.00 kg, x = 4.50 m, 0 = 3.7°, F = 14.5 N, and u, = 0.400, and find the answers to parts (a) and (b). (Include appropriate signs.) We = W =

Two forces F1 = (-1.5i-0.8j+0.7k) N and F2 = (-0.7i+1.2j) N, are applied to a moving object. what is the net force on the object? if the displacement vectoris d= (8.0i+6.0j+5.0k) m, what is the work done by these two forces?

A trunk of mass m = 0.6 kg is pushed a distance d = 30 cm up an incline with an angle of inclination theta = 23.0° by a constant horizontal force P = 425 N (see figure). The coefficient of kinetic friction between the trunk and the incline is 0.31. P. Calculate the work done on the trunk by the applied force P. Calculate the work done on the trunk by the frictional force. Calculate the work done on the trunk by the gravitational force.

a block of mass m=5 kg is pulled at a constant speed along a rough horizontal surface by a rope at 30 degree. the tension in the rope is T and the coefficient of kinetic friction between the block and the surface is 0.25. (a) find the tension in the rope. (b) if the block travels a distance of 4.5 m along the surface, what is the work done by the tension force from the rope? (c) find the work done by friction on the rock.

A 3.8-kg block is pushed 2.1 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 8 = 30° with the horizontal, as shown in the figure below. If the coefficient of kinetic friction between block and wall is 0.30, determine the following. (a) the work done by F Ⓡ (b) the work done by the force of gravity J (c) the work done by the normal force between block and wall J (d) By how much does the gravitational potential energy increase during the block's motion? J

A block of mass m=1.5kg is released from rest at an unknown height h. The coefficient of friction between the block and the incline oriented at an angle of 0=56° is Hk=0.21. If the speed of the block v=4.1m/s when it leaves the inclined plane, determine the work done by the force of gravity. Take g =9.81m/s? and express your final result using one decimal place. m m