Answer
A mass of 1 kg has a weight of mg = 10 N, so 30 kg weighs 300 N. The grocery bag can safely hold 30 kg of apples.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.