1. A 25 kg box is lifted upward at a constant rate of 2 m/s. Ifthe box is lifted a height of 4 m, how much work is done on thebox?
2. A 120 kg box is attached to a string and pulled along arough, flat surface with a coefficient of friction 0.22. If thestring pulls with a force of 500 N and is attached at an angle of30 degrees above the horizontal, and the box moves strictlyhorizontally a distance of 5 m.
How much work is done on the box by pulling on the string?
3.
A 120 kg box is attached to a string and pulled along a rough,flat surface with a coefficient of friction 0.22. If the stringpulls with a force of 500 N and is attached at an angle of 30degrees above the horizontal, and the box moves strictlyhorizontally a distance of 5 m.
How much work is done on the box by gravity?
4.
A 120 kg box is attached to a string and pulled along a rough,flat surface with a coefficient of friction 0.22. If the stringpulls with a force of 500 N and is attached at an angle of 30degrees above the horizontal, and the box moves strictlyhorizontally a distance of 5 m.
How much work is done on the box by friction?
4.
A 120 kg box is attached to a string and pulled along a rough,flat surface with a coefficient of friction 0.22. If the stringpulls with a force of 500 N and is attached at an angle of 30degrees above the horizontal, and the box moves strictlyhorizontally a distance of 5 m.
How much work is done on the box by friction?
4.
A 120 kg box is attached to a string and pulled along a rough,flat surface with a coefficient of friction 0.22. If the stringpulls with a force of 500 N and is attached at an angle of 30degrees above the horizontal, and the box moves strictlyhorizontally a distance of 5 m.
How much work is done on the box by friction?
A 120 kg box is attached to a string and pulled along a rough,flat surface with a coefficient of friction 0.22. If the stringpulls with a force of 500 N and is attached at an angle of 30degrees above the horizontal, and the box moves strictlyhorizontally a distance of 5 m.
How much work is done on the box by friction?
A 120 kg box is attached to a string and pulled along a rough,flat surface with a coefficient of friction 0.22. If the stringpulls with a force of 500 N and is attached at an angle of 30degrees above the horizontal, and the box moves strictlyhorizontally a distance of 5 m.
How much work is done on the box by friction?
A 120 kg box is attached to a string and pulled along a rough,flat surface with a coefficient of friction 0.22. If the stringpulls with a force of 500 N and is attached at an angle of 30degrees above the horizontal, and the box moves strictlyhorizontally a distance of 5 m.
How much work is done on the box by friction?
4. A 120 kg box is attached to a string and pulled along arough, flat surface with a coefficient of friction 0.22. If thestring pulls with a force of 500 N and is attached at an angle of30 degrees above the horizontal, and the box moves strictlyhorizontally a distance of 5 m.
How much work is done on the box by friction?
5. In  the previous problem concerning the work doneby friction. The work done by friction would be negative as it isremoving energy from the system and working to slow the motion.True or False?
6. In the previous problems, the Normal force opposes gravityand prevents the object from falling through the surface it issliding across. The work done by the normal force in this case isnegative as it is stopping the motion in the vertical direction.True or False?
