Question 2: Friend A lifts a stone weighing 3 kg vertically. What is the least force exerted by your friend A to lift the stone?

A. 3000N

B. 3WOMEN

C. 30N

D. 300N

The weight of the stone is:

P=10m=10.3=30(N)

To lift the stone vertically, a minimum force of 30N . must be applied

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