Answer:
160 N
Explanation:
Since, work done by effort = work done by load,
Fd = F'd' where F = effort force = 40 N, d = distance moved by effort = 8 m, F = load and d' = distance moved by load = 2 m.
So, Fd = F'd'
40 N × 8 m = F' × 2 m
320 Nm = 2F m
So, F = 320 Nm/2m
= 160 N
So, the object that can be lifted is an object of 160 N
