Weight = mass x gravity
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While just holding the weight on his shoulder, the weight lifter does no work! For work to be done, the mass must be moved through a distance … No Movement, No Work! (but don't tell that to a weight lifter …)
Weight is mass times acceleration due to gravity.
Work is calculated as the product of force and distance. In this case, a 5-pound weight lifted 10 feet means that the work done is 5 pounds multiplied by 10 feet, which equals 50 foot-pounds of work. This illustrates the basic principle that lifting a weight requires energy, quantified as work, and is dependent on both the weight's force and the distance it is moved.
The tin weight is 7g !
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