A block of mass m is kept in an elevator which starts moving downward from rest with acceleration a₀. The block is observed by observer A inside the elevator and observer B on the ground for a time interval t₀.
Physics · Work , Power and Energy · kinetic enegy and work engery theorem
A block of mass m is kept in an elevator which starts moving downward from rest with acceleration a₀. The block is observed by observer A inside the elevator and observer B on the ground for a time interval t₀.
Sub-question 1
Observer B finds that the work done by gravity is:
Options
Sub-question 2
Observer B finds that the work done by the normal reaction N is:
Options
Sub-question 3
According to observer B, the net work done on the block is:
Options