Related Problems with Solution

Problem 2 : A block of mass 2 kg is lifted vertically through a distance of 10 meters. Calculate the work done in lifting the block, and express it in joules.#

Solution :#

The work done (W) in lifting an object against gravity is given by the formula: $$[W = mgh]$$ Where:

• W = Work done (in joules)
• m = Mass of the object (in kilograms)
• g = Acceleration due to gravity (approximately 9.81 m/s²)
• h = Height or vertical distance (in meters)

Substituting the values: $$[W = 2 , \text{kg} \times 9.81 , \text{m/s²} \times 10 , \text{m} = 196.2 , \text{joules}]$$