I'm doing this test later today so I'll let you know the answer
Answer:(a)2631.46 N
(b)1605.51 N
Explanation:
Assuming there is a cable between crate and worker
Given
weight of worker 
Weight of crate 
mass of worker 
mass of crate 
acceleration of system 
Tension in the wire carrying Worker




(b)Tension in the string above




60 N because 98N=mg (here g= 9.8 on earth) thus mass can be calculated which is 98/9.8 = 10kg
Now,new weight with g = 6m/s^2
=m×g' (here g' is new acceleration of the new planet)
= 10×6=60N