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Understanding strength and torque.

1 Provide an example of torque that is important in your sport?

2. Define strength and explain why strength varies through a joints range of motion?

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1) Well, I play football in the summer (Canadian football, with the oblong ball you don't actually use your feet on) and I curl in the winter. Torque is very important in both sports, as is angular momentum. In football, as you release the ball you apply a downward torque with your fingers, which gets the ball spinning. That helps stabilize the ball in flight (due to conservation of angular momentum). Similarly, a torque is applied to a curling rock as it is being released to set it spinning and control its trajectory -- except in curling, the aim is not to get a straighter path but actually one that curls (hence the name of the sport).

2) Strength is actually a little tough to define exactly, but let's call it the ability to exert force or bear loads. Strength comes from your muscles acting on your ...

Solution Summary

The expert provides examples of torque that is important to sports. Why the strength varied through a joint range of motion is given.