Answer:
The exerting force by the person is 294 N.
(3) is correct option.
Explanation:
Given that,
Mass of crate = 30 kg
Normal force = 150 N
When a person is lifting a crate then the crate does not contact the floor
So, the normal force is zero.
We need to calculate the exerting force by the person
Using formula of force
[tex]F = ma[/tex]
[tex]F=30\times9.8[/tex]
[tex]F=294\ N[/tex]
Hence, The exerting force by the person is 294 N.
