A person is using a pulley to lift a heavy platform. The person pulls on the cord with a force of 120 N. The person pulls it down a distance of 1.0 m. The platform is pulled up by a force of 153 N. It moves up 0.6 N. What is the efficiency of the pulley?

the diagram which shows forces as either balanced = same speed or unbalanced = accelerarting

okay i have so many questions. but the big one here is: um wt..f is this mess? ?

mistakes are ok

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation