A metal block of mass is lifted vertically from the ground to the top of a laboratory…
PHYSICS · Multi-part · CBSE · Physics · Work and Energy · Work and Energy
Problem
A metal block of mass 2.5kg is lifted vertically from the ground to the top of a laboratory bench 75cm high and then further to a shelf 1.20m above the bench. Take the value of g as 10m s−2.
(i) Calculate the increase in gravitational potential energy of the block when it is placed on the bench.
(ii) Calculate the additional energy required to raise the block from the bench to the shelf.
(iii) Find the total energy gained by the block from the ground to the shelf.