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Why do some high jumpers arch their bodies into au shape when passing over the high bar?

Why do some high jumpers arch their bodies into au shape when passing over the high bar?

Why do some high jumpers arch their bodies into a U shape when passing over the high bar? High jumpers assume this U shape to lower their center of gravity. The jumper’s muscles must do work to raise the jumper’s CG in order for the jumper to clear the bar.

Why do high jumpers arch their backs?

The genius of the Fosbury Flop is that it allows the athlete to bend his or her back around the bar at the peak, causing the athletes body to clear the bar while his or her center of mass travels under the bar (see Fig. 1).

Why do high jumpers jump backwards?

Now, you might ask, why do many of the jumpers leap backward? That part is easy: when your back is to the pole, there is less chance that your arms or legs will hit the bar and knock it down.

Why does a washing machine vibrate violently if the clothes are not evenly distributed?

A washing machine vibrates violently when clothes are not evenly distributed in the tub since the CG of the tub is not at the tub’s center. The tub will rotate about its CG, not necessarily about its geometric center.

Why does a washing machine vibrate violently?

Another possible cause of a shaking washing machine is broken or damaged suspension springs. These springs are used to suspend the basket from the frame. If they are broken or damaged, however, the washing machine may shake violently when it enters the spin cycle.

How far can object be tipped before it topples over?

Why does the Leaning Tower of Pisa not topple? Because the CG is above its area of support (base). How far can an object be tipped before it topples over? It may be tipped over without toppling until the CG extends beyond the area of support (base).

What is an advantage of a low center of gravity?

A lower center of gravity will provide better handling. By lowering your suspension, you’re also lowering wind resistance and the car’s center of gravity. This translates into you being able to drive your car faster. Reduced rollover risk.

When can the center of gravity be the center of the load?

A load that is uniformly consistent in cross section along its length will have its center of gravity located exactly half the length of the load. This is because uniform cross sections result in uniformly distributed weight. Lifting problems can arise when loads have unevenly distributed weight.

How do you determine the weight of a load?

Calculating the Weight of a Load

  1. Step 1: Determine the Volume of the Load. Rectangle/Square: Volume = Length x Width x Height.
  2. Step 2: Determine the Material You’ll Be Lifting. The table below can be used for approximate weight values of common loads and materials:
  3. Step 3: Determine the Weight of Object.