Afarmer tosses a rope over a beam at the top of a barn. he ties one end of the rope to a bale of hay. he then raises the bale up to the barn loft by pulling down on the loose end of the rope.
why does the input force have to be greater than the force needed to lift the bale?
a. friction increase the effect of the input force.
b. friction eliminates the work input.
c. friction reduces the work input
Answers: 2
Physics, 21.06.2019 22:30
How have the competing explanations' experiments on atoms affected the development of the atomic model?
Answers: 1
Physics, 22.06.2019 05:00
Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.
Answers: 1
Physics, 22.06.2019 12:40
Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?
Answers: 3
Afarmer tosses a rope over a beam at the top of a barn. he ties one end of the rope to a bale of hay...
Mathematics, 22.10.2020 19:01
Chemistry, 22.10.2020 19:01
Physics, 22.10.2020 19:01
Mathematics, 22.10.2020 19:01
Mathematics, 22.10.2020 19:01
Health, 22.10.2020 19:01
Mathematics, 22.10.2020 19:01
Social Studies, 22.10.2020 19:01
Computers and Technology, 22.10.2020 19:01