A crate is lifted vertically 1.5 m and then heldat rest. The crate has weight 100 N (i. e., it issupported by an upward force of 100 N). How much work was done in lifting thecrate from the ground to its final position?1. More than 150 J2. 150 J3. A bit less than 150 J4. No work was done. 5. None of these

Question

Gretchen Holden

Physics

22 August, 19:55

A crate is lifted vertically 1.5 m and then heldat rest. The crate has weight 100 N (i. e., it issupported by an upward force of 100 N). How much work was done in lifting thecrate from the ground to its final position?1. More than 150 J2. 150 J3. A bit less than 150 J4. No work was done. 5. None of these

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Answers (1)

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Drew · Answer 1

option 1

Explanation:

given,

Weight of crate = 100 N

Crate is lifted up to height = 1.5 m

Work done = ?

work = Force x distance

work = 100 N x 1.5 m

work = 150 J

However, work would be more than the 150 J to lift the crate slightly higher to its final position.

The correct answer is option 1