Question

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff ideal sp

Part A--> what magnitude of force must you apply to hold the platform in this position?
Part B--> how much additional work must you do to move the platform 0.180 meters further?
Part C--> what maximum Force must you apply to move the platform to the position in Part B?

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Answer #1

The expression for work by the spring is, 2(75.0J) (0.180m = 4629.62 N/m The magnitude of the force required to hold the plat

The additional work is, W = P.-P = 300J – 75J =225J The maximum force is, Fax =k (2x) = ( 4629.62N/m 2 (0.180m) =1666.66 N​​​​​​

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