Alever has a mechanical advantage of 5. how large would a force need to be to lift a rock with a mass of 100kg

196 Newton force is needed to lift a rock.

Explanation:

We know a formula, Mechanical advantage × effort applied = Load lifted. In this question, mechanical advantage of lever = 5 Load lifted = Mass of the rock × acceleration due to gravity = 100 × 9.8 = 980N so, putting the given values in the formula, Therefore a force of 196 Newton is required to lift a rock of 100 kg with mechanical advantage 5.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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