A man sits on a chair supported by a rope passing over a frictionless fixed pulley. The man who weighs 1,000 N exerts a force of 450 N on the chair downwards while pulling the rope on the other side. If the chair weighs 250N, then the acceleration of the chair is

Options

A. `0.45m//s^(2)`
B. 0
C. `2m//s^(2)`
D. `9//25m//s^(2)`

Answer

C

Explanation

For man: `T+F-W_(p)=m_(p)a`
For chair : `T-F-W_(c)=m_(c)a`