A shot-putter puts a shot of 7kg that leaves his hand at a distance of 1m above the ground

Answer :

The work done in moving a mass over a distance is the product of the weight of the mass and the distance, the work done in this example is

68.67 Joules

Force, Weight and Work

Given Data

  • Mass of the shot put = 7kg
  • Distance moved = 1 meter
  • Work Done in moving the shot put = ??

We know that the expression for the Work done is given as

Work Done = Force * Distance

Let us find the force

Force = mg

g = 9.81 m/s^2

Hence the work done

Work done = 7*9.81*1

Work done = 68.67 joules

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