A crane pulls a 700 kg box at a constant velocity straight up for a distance of 50 m. Calculate the work done by the crane.

A man starts at ground level and carries a 20 kg box up a flight of stairs to a height of 3.6 m. He then carries the box down an adjacent flight of stairs back to ground level and ends up 10 m away from where he started. What is the total amount of work the man has done? Explain

A person pulls a 75-kg box 20 m along a horizontal floor by a constant force Fp = 125 N, which acts at a 42 degree angle. The floor is not smooth and exerts a friction force of Ff = 65 N.  Determine the following: The work done by each force acting on the crate (Don’t forget any!) The net work done on the crate

A 4.5-kg block slides down a frictionless incline making an angle of 55.0° with the horizontal. (a) What is the total work done on the block when the block slides 1.4 m (measured along the incline)? (b) What is the speed of the block after it has slid 1.2 m if it starts from rest? m/s (c) What is its speed after 1.2 m if it starts with an initial speed of 1.6 m/s? m/s You can use the definition of work as the scalar product of a constant force and displacement to find the work done by each force acting on the block. Then use the work- kinetic energy theorem the find the speed of the block at any given location and for any initial kinetic energy it may have.

A 60 Nt force is exerted on a 5 kg box at an angle of 60° above the horizontal.  (a)  What is the work done by the 60 Nt force on the box if the box moves a distance of 2 m across the floor? (b)  What is the work done by the normal force?:  (c)  If the box moves at a constant speed, what is the work done by friction on the box?:  (d)  What is the work done by gravity on the box?  (e)  What is the total work done by all of the forces on the box?

A four-meter chain hangs from a ceiling. The chain has a density of 1.5 kilograms per meter. Find the work done if the lower end of the chain is lifted to the ceiling so that it is level with the upper end.

The graph shows the xx component of a force that acts on an object that moves on the x axis. The vertical spacing between adjacent grid lines is 4.93N, while the horizontal spacing between adjacent grid lines is 1.0m.  What is the work, in joules, done by the force as the object moves from x=4m to x=5m?

During terrible weather at a ski-flying world championship, a ski jumper tried to adjust for bad conditions midway down the ramp but completely lost control and tumbled wildly off the side at its bottom into a scattering crowd. The 73-kg jumper left the ramp about 45 m lower than his starting position. After hitting the ground, the jumper crashed wildly and descended down the hill another 20 vertical meters before coming to rest. Here, friction cannot be ignored. Calculate the total work done on the ski jumper to bring him to rest. Round the final answer to the nearest whole number.

A 97.5-kg man pushes a crate 4.5 m up along a ramp that makes an angle of 17.5° with the horizontal. He exerts a force of 495 N on the crate parallel to the ramp and moves it at a constant speed. Calculate the work, in joules, that the man performs to cause the crate and himself to move up the ramp.

A 2.0-kg particle moving along the x-axis is acted upon by the force that varies with position as shown below. The speed of the particle at x = 0 is v = 6.0 m/s. Find the work done by the force from x = 0 to x = 4.0 m, and particle’s speed at x = 4.0 m.