The work done to hold a weight of 20 kg at a height of 1 m above the ground is zero Joules. When an object is held stationary, there is no displacement, so no work is done against gravity.
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The work done to hold a weight of 20 kg at a height of 1 m above the ground is zero Joules. When an object is held stationary, there is no displacement, so no work is done against gravity.
The work done to hold a weight of 20 kg at a height of 1 m above the ground is zero Joules (D). Work is defined as the product of force and displacement in the direction of the force. When holding an object stationary, like in this scenario, there is no displacement; thus, no work is done against gravity. While the weight of the object is 20 kg, and the force due to gravity is approximately 9.81 m/s² (981 N/kg), the vertical displacement is zero since the object is held at a constant height. Therefore, the work done is zero. Options (A), (B), and (C) are incorrect because they imply that work is being done, but in reality, no displacement occurs when holding the weight stationary at a constant height above the ground.