Work By Gravity & Inclined Planes Video Lessons

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Problem: You need to raise a heavy block by pulling it with a massless rope. You can either (a) pull the block straight up height h, or (b) pull it up a long, frictionless plane inclined at a 15 angle until its height has increased by h. Assume you will move the block at constant speed either way.Will you do more work in case a or case b? Or is the work the same in both cases?

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Problem Details

You need to raise a heavy block by pulling it with a massless rope. You can either (a) pull the block straight up height h, or (b) pull it up a long, frictionless plane inclined at a 15 angle until its height has increased by h. Assume you will move the block at constant speed either way.

Will you do more work in case a or case b? Or is the work the same in both cases?

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