How Does Lifting Objects Affect the Body's Center of Gravity?

In summary, when lifting both light and heavy objects, a person's body is affected by the shift in their center of gravity. In order to lift a heavier weight, a stronger force must be applied to counteract its weight. This force is then transferred to the ground, causing the person's body to remain stable. An experiment can be done to demonstrate this concept by lifting one foot off the ground while standing against a wall.
  • #1
kaya-king cola
8
0

Homework Statement


Discuss how a person's body is affected when lifting both light and heavy objects.


Homework Equations


No equations provided.


The Attempt at a Solution


The body's centre of gravity will be shifting at every moment. (I have a really poor grasp and understanding of physics concepts and this the only answer I can come up with. Please help me!)
 
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  • #2
Try drawing a stick figure lifting things, and try to arrow the forces.
 
  • #3
okay. How about something more graphic? The light and heavy part. For example, more on the centre of gravity part. Thanks for your help!
 
  • #4
Help! Thanks to everyone who answered, but I still do not understand!
 
  • #5
In order to actually lift a heavier weight, you'll need to provide a stronger force upon that object to counteract its own weight.

Thus, at the very least, if you move it with constant velocity, it will, by Newton's 3.law, affect your arm with a force equal to its own weight.

Thus, if you are not to fall through the ground, the ground must act upon you with a force equal to the sum of your own weight and the objects weight. That force is applied to your feet, presumably.
 
  • #6
Wow, that's quite the type of answers I had been looking for. Thanks!
 
  • #7
Hello thanks for the help I received since, but I really need more aid!
 
  • #8
hello please help me with this qn! Thanks!
 
  • #9
I'll toss in an experiment you can do at home. stand erect feet slightly apart, and lift one foot off the ground. assuming you have 2 legs, not too hard. Now with your right shoulder and arm pressed against a wall so that your hips, feet and shoulders are all perpendicular to the wall. Repeat above with left and right legs? What did you notice?
 

Related to How Does Lifting Objects Affect the Body's Center of Gravity?

1. What is the turning effect of forces?

The turning effect of forces, also known as torque, is the measure of the ability of a force to rotate an object around an axis. It is dependent on the magnitude and direction of the force, as well as the distance from the axis of rotation.

2. How is the turning effect of forces calculated?

The turning effect of forces can be calculated by multiplying the magnitude of the force by the perpendicular distance between the force and the axis of rotation. This is represented by the equation: T = F x d, where T is the torque, F is the force, and d is the distance.

3. What is the difference between clockwise and counterclockwise rotation?

Clockwise rotation refers to the direction in which an object rotates when viewed from above, in a direction that is the same as the hands of a clock. Counterclockwise rotation is the opposite direction, like the movement of the hands of a clock in the opposite direction.

4. How does the position of the force affect the turning effect?

The position of the force affects the turning effect as it determines the perpendicular distance between the force and the axis of rotation. The farther the force is from the axis of rotation, the stronger the turning effect will be.

5. What are some real-life examples of the turning effect of forces?

Some examples of the turning effect of forces in our daily lives include opening a door, using a wrench to loosen a bolt, and riding a bike. In all of these situations, a force is applied at a distance from the axis of rotation to produce a turning effect.

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