why is it easier to pull objects then to push them?any scientific reason?
478513
ALL THE ABOVE ANSWERS ARE WRONG! When you push or pull, you are using different muscles. Some muscles are stronger than others. While some have better efficiency because of the placement of tendons. The farther away you're tendon is from the fulcrum of your point of force (usually your elbow/shoulder), the better your mechanical advantage. Like the above said, it requires the same force to push or pull. However, the effort required to exert that force is less.\n\nIf you want it in simple terms, think of this like working out. The amount you can bench press (push) is most likely more than the amount you pull.
1026758
friction is equal to the normal force (such as weight) times the coefficient of friction. f = c of friction X normal. if you try to push a cardboard box on the ground, its kinda easy. now imagine putting a hundred pounds in that box. its harder to push becuase there's more friction holding the box back.
761342
We did something like this in my physics lab with an Atwood machine.  It was a pully with weights hanging from it.  I can't exactly remember how it worked, but maybe this will inspire you.  We also did something with an air track and these two masses colliding and we'd see which one would go in which diretcion.  You need a nearly frictionless surface, like an air hockey table or ice slab.
1151411
Objects of different mass do fall at the same speed, but air resistance hinders this fact.  For example, if you drop a bowling ball and a feather at the same time on the Earth, obviously the bowling ball falls faster. \n\nHowever, on the moon, when the astronauts dropped a feather and a bowling ball, they hit the ground at the same time. \n\nIt would seem that the bowling ball should fall faster since gravity is pulling on it with more force. But, with the more mass, comes more inertia, which meas it resists being pulled more than the feather. So, the feather is pulled less, but it resists less as well, so because of that, they will fall at the same time. The relationship between the force of pull and the object's inertial compensates exactly so that all objects fall at the same rate.
628196
Depends on the definition of "pull" and "push".
80665
well as they said, the ball falls faster  than the feather, not becuase its heavier, not that gravity is more on it. its because of the simple reason, air risistence. in vacum, where there is no air , itll take the same time for both to reach ground.
239996
Work done = force x distance moved by object i thinkin a straight line ,so ithink some conversion maybe needed.
436928
If the Earth's radius were bigger, and the mass of it stayed the same, then you would weigh lighter.  That's because with a bigger radius, you're farther away from the centre of gravity, therefore less pull.  If the mass change, then the situation would be different.
736619
you need to be more specific.   for example a pulley where only half the force but for twice as long is necessary to accomplish the task.\nwith a lever, you move the lever farther, but use less force.\n\n\nok, i missed the day in physics class, but i tried.\nhttp://en.wikipedia.org/wiki/Mechanical_advantage
404829
the only thing that leads to the misconception that heavier things fall faster is most likely due to air resistance. In a vacuum, all objects fall under the same acceleration/gravity.
528305
To lift an object from a ground we must apply a force equal to the weight of the object and move it to the required height.\n\nThus to do a work two things are required, a force and a distance. \n\nWork is the product of these two. \n\nIf a body of weight 32N is to be moved up through a distance of 1m we have to do a work of 32 joule totally. \n\nThat is we apply a force of 32N and move it through 1m.\n\nThe same work can be done by a boy who cannot exert a force more than 16 N.\n\nThis is possible because, the boy has to move 16N force through a distance of 2m instead of usual 1m.\n\nWe can apply 1N force and move it through 32m. \n\nOnly thing is that the product of force and distance must be 32 joule.\n\nAll simple machines are based on this principle. \n\nWhen we reduce the force the distance is increased; when we increase the force the distance is reduced. But the product remains the same. That is the total work done is the same.
260289
Stephen_mgi is correct.\n\nForce x distance moved is the work done.\n\n Suppose a 10 N force is moved through a distance 5m the work done is 50 joule.\n\nThe same work can be done in many number of ways; for example  5 N force when moves through 10 m or 1N force moves through 50 m; or 25N force moves through 2m etc.\n\nThus when force is reduced distance is increased. Any one will feel it convenience to reduce the force rather than to give huge force and jump up to go to a higher place.\n\nIn the stair case when we increase the distance by walking in a diagonal way we reduce the force and feel it easy.\n\nThe stair case is a simple machine which is designed at a slope. \n\nBy walking diagonally we still reduce the slope to our convenience.
1050564
well city has tons of buildings and the buildings have weight. so they will add more pressure to the tectonic plates and cause them to move faster i guess. There are tectonic plates which meet at one point and they either slip, slide or grind agaisnt each other. and when they slip, this causes the earthquake. so then the more weight on the plates means also more pull. so the plates move faster or something. my guess. but i doubt it has any effect
1129609
A pulley is a chain, belt or rope wrapped around a wheel. The mechanical advantage of a pulley system is approximately equal to the amount of supporting ropes or strands. \n\nTherefor, if you had a mass of 60kg and wanted to lift it using two supporting ropes, you would have mechanical advantage (MA) of 2. The mass will feel like one half of what it really is. When lifted with the help of the pulley system your 60kg would only feel like 30kg. Thus the effort force equals 30kg. \n\nHere are a couple Of websites that explain this more.\n\nhttp://www.technologystudent.com/gears1/pulley7.htm\n\nhttp://www.swe.org/iac/lp/pulley_03.html
939535
Sorry, but you'll need to give a little more information. How are the pulleys and weights arranged? Just a little picture would help.\n\nTypically, pulleys, weights, tensions and accelerations are extensions of the block on an incline problem except the pulleys are providing the force vector direction change.\n\nIt might help to think of the problem as a sum of vectors and look for where their vector sum lies.
372218
So you can push it more...sort of like lifting weights
575083
lifting, pulling, exerting greater forces