Number of results: 9
Why do two objects of different mass and dropped from the same height hit the ground at the same time?
Sunday, November 11, 2007 at 10:44pm by beckii
The acceleration rate "a" is the gravitational Weight force (M g) divided by mass (M). That is Newton's second law. But weight is proportional to mass, so the mass cancels out. acceleration = Mg/M = g When the effect of air resistance is included, objects that are less dense ...
Sunday, November 11, 2007 at 10:44pm by drwls
A 62 kg hiker climbs to the top of a 3700 m-high mountain. The climb is made in 5.0 h starting at an elevation of 2600 m. Calculate the average power output in watts. Calculate the average power output in horsepower.
Tuesday, March 2, 2010 at 2:15pm by peyton
You're standing by the roadside as a truck approaches, and you measure the dominant frequency in the truck noise at 1105Hz . As the truck passes, the frequency drops to 885Hz. What is the truck's speed?
Tuesday, May 11, 2010 at 2:17am by Mike
A tight-rope walker walks across a 30.0 m long wire tied between two poles. The center of the wire is displaced vertically downward by 1.0 m when he is half-way across. If the tension in both halves of the wire at this point is 3675 N, what is the mass of the tight-rope walker...
Thursday, September 20, 2012 at 8:54pm by nate
the force diagram reflects the physical setup the walker is 15.0 m from either end; and is displacing the wire 1.0 m this means that the vertical component of the tension is one-fifteenth the tension in the wire (on BOTH sides) so the force exerted by the walker is 3675/15 * 2...
Thursday, September 20, 2012 at 8:54pm by Scott
First you need to calculate the PE needed to make the climb. U=mgh U=(62*(2600-3700)*9.8) This value is energy or work denoted as a Joule. A Watt= Joule/Seconds So simply take your joules and divide it by the time the trip took. Convert your 5hr to seconds so... W=(62*(2600-...
Tuesday, March 2, 2010 at 2:15pm by Tyler
Phsycis/Math (please help)
Two blocks are connected by a string over a frictionless, massless pulley such that one is resting on an inclined plane and the other is hanging over the top edge of the plane. The inclined plane is inclined at an angle of 37 degrees. The hanging block has a mass of 16.0 kg, ...
Wednesday, November 20, 2013 at 10:19am by Jared
Phsycis/Math (please help)
first, figure the friction on the inclined block,and the weight down the incline. weight down the incline=mgSinTheta friction on the incline: mg*mu*CosTheta. Net force=total mass*a writing net force along the string, clockwise is +. force pulling-forces regarding=ma +16g-...
Wednesday, November 20, 2013 at 10:19am by bobpursley