A block of mass 0.31 kg is released from rest at point A and slides down a curved slope to point B. The vertical height of A is h = 2.06 m above point B and the block arrives at point B with a speed vB = 4.85 m/s. How much work was done by friction as the block slid from point A to point B? Express your answer in joules.

A spring and block are in the arrangement of the figure. When the block is pulled out to x = +5.0 cm, we must apply a force of magnitude 370 N to hold it there. We pull the block to x = 14.0 cm and then release it. How much work does the spring do on the block when the block moves from x₁ = +5.0 cm to (a) x = +4.0 cm, (b) x = -4.0 cm, (c) x= -5.0 cm, and (d) x = -10.0 cm? (a) Number i (b) Number i (c) Number i (d) Number i x=0 F = 0 00000000 x positive F, negative F moon Units Units Units (a) Units (b) d Block attached to spring x negative F, positive x x x

A force F = 20.0 Newtons at a 20.0 degree angle with the X axis. This force is applied over a distance of 20.0 meters along the X axis. What work is done by the Force?

A spring and block are in the arrangement of the figure. When the block is pulled out to x = +4.0 cm, we must apply a force of magnitude 360 N to hold it there. We pull the block to x = 12.0 cm and then release it. How much work does the spring do on the block when the block moves from x₁ = +5.0 cm to (a) x = +3.0 cm, (b) x = -3.0 cm, (c) x= -5.0 cm, and (d) x = -9.0 cm? x=0 Ę = 0 oooooooo (a) x positive F negative F o o o o o o u (b) (c) -Block attached to spring x negative F, positive x X

A 1300kg truck travels up a 17.5m high hill. The nonconservative forces of friction and the force generated by the engine do work on the truck. If the work done by friction is -3.10x105j and the work done by the engine is 6.40x105j, determine the change in the trucks kinetic energy as it travels from the bottom to the top of the hill.

A block of mass m slides down an inclined plane with angle θ up from the horizontal. The block-surface interface has a kinetic friction of μk. If the block slides a distance d, what is the total work done on it by all forces?

Please include formulas and show all work thanks

Bob is pulling a box of his toys of mass 15.0 kg along a rough horizontal surface for a distance of 6.00 m. The tension force in the rope is 58.0 N and the angle is 30° with respect to the horizontal. The frictional force on the box is 12.0 N.  How much work is done on the box by the normal force, in Joule? Use g = 10.0 m/s2. Your answer needs to have 3 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

a crate with mass m = 23.9 kg being pushed up an incline that makes an angle φ = 19.2 degrees with horizontal. The pushing force is horizontal, with magnitude P, and the coefficient of kinetic friction between the crate and the incline is μ = 0.337. Consider the work done on the crate as it moves a distance d = 4.34 m at constant speed.    Part (a)  What is work done by the pushing force, in joules?  Part (b)  What is the work done by friction, in joules?   Part (c)  What is the work done by gravity, in joules?  Part (d)  What is the net work, in joules?

A man pushes a 85.9-N crate a distance of 3.7 m up a long frictionless ramp at a constant speed.  His pushing force is parallel to the ramp.  The ramp makes a 30.0-degree angle with the horizontal.  What is the work done by the man in pushing the crate? Give your answer in joules, rounded to one decimal place.