Why Use mg vs mgh in Introductory Physics? - Physics Forums
2009年3月15日 · Can somebody please help me understand in which situations (for a intro physics 1 class) I would be required to use mg versus mgh? Neither my teacher nor my …
Understanding Mgh = 1/2mv^2: Conditions for Equal and …
2006年9月29日 · according to COE, (initial)PE + KE = PE + KE(final) so i think that its better to use this instead of your equation.For example,if the object were to be released with some …
Total work/effort/energy spent to climb a hill - Physics Forums
2016年3月10日 · So of course the first thing I thought was to take the difference of the potential energy to estimate that work and so I said that work equals W=mgh, so for a person of 60kgr, …
Calculating Power Requirements for a Ski Lift - Physics Forums
2011年3月14日 · Homework Statement A ski tow operates on a slope of angle 14.3 of length 350m . The rope moves at a speed of 12.1km/h and provides power for 49 riders at one time, …
Ratios of work to height with same mass - Physics Forums
2005年8月1日 · This is a question from the MCAT, test 3R, and I am stumped as to why the answer is what it is. "A mass is lifted from the ground to an altitude h1, requiring work W1. The …
Work done in moving a body up an incline - Physics Forums
2022年3月14日 · W=mgh=100(\sin 37)2=-120J Right answer! But the question is asking work done by the person. So again I ...
Work done to lift a mass of water - Physics Forums
2015年3月11日 · (a) W = mgh (b) W = (1/2)mv^2 Ok so I got those two. The next question asks for the total power output of the pump. It seems that the answer comes from adding (a) and (b) …
Calculating Max Power at Chute-Montmorency - Physics Forums
2013年12月26日 · Now you are correct in that W=Fxd and F=mg to give you W=mgh (which is really saying that the energy is via gravitational potential energy). Power = Work done/time So …
Work & Tension Homework: Find W & Delta K.E. - Physics Forums
2008年8月6日 · W = mgh W = Fd The Attempt at a Solution A) W = Fd = -350J I am having a hard time with the concept as to why the block does not affect the work on the rope. Also, how is …
What is the minimum applied force required to ball up a ramp?
2007年4月8日 · Homework Statement 1.A 75kg ball is dragged along a 12m ramp in order to get from the ground to the top of the ramp, which is 2m above ground. Determine the minimum …