where m is the mass of the object, g is the acceleration due to gravity (approximately 9.8 m/s^2), and h is the height of the object above the ground.
Work is defined as the product of the force applied to an object and the displacement of the object in the direction of the force. Mathematically, work (W) is represented by the equation: where m is the mass of the object,
GPE = m × g × h = 10 kg × 9.8 m/s^2 × 4 m = 392 J Calculate the work done on the block
A 50 N force is applied to a block, causing it to move 2 m to the right. Calculate the work done on the block. calculate its efficiency.
A machine requires an input energy of 2000 J to lift a 50 kg load to a height of 2 m. If the machine takes 5 seconds to lift the load, calculate its efficiency.