A block and tackle system have VR = 5. Rohan exerts a pull of 150 kgf. What is the maximum load he can raise with his pulley system if its efficiency = 75%?
5625 N
A block and tackle system of VR = 5 is as shown below.
Given: VR = 5, L = ?
E = 150 kgf
= 150 × 10 = 1500 N
η=75100=34=MAVR
⇒MA=154=LE
or L = 5625 N