Question

A cuboidal box weighing 60 N is placed on the floor. If the dimensions of the
base of the box are 25 cm x 16 cm, find the pressure exerted by the box on
the floor.​

Answer 1

Answer:

Work done for climbing the stairs is 1200 J

P.E. = work done = mgh

1200 = 50 × 9.8 × h

h =1200/(50×9.8)

h = 2.4 m

Thus, height climbed by the boy on spending 1200 J of energy is 2.4 m