A horizontal spring with a spring constant of 190 N/cm is compressed 6.3 cm. A wooden...

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Physics

A horizontal spring with a spring constant of 190 N/cm iscompressed 6.3 cm. A wooden block with a mass of 1.5 kg is placedin front of and in contact with the spring. When the spring isreleased it pushes the block, which slides on a frictionlesshorizontal surface for some distance. The block then slides up africtionless incline of 27 degrees above the horizontal and comesto a momentary stop before sliding back down. The system is thespring, the block, the incline, and the Earth. Ignore airresistance.
A) What is the potential energy of the spring before it isreleased?
B) What is the kinetic energy and the speed of the block as itslides on the horizontal surface after the spring has pushedit?
C) At what height does the block stop on the incline?
D) If the incline were rough, how would the stopping height ofthe block compare to the stopping height when the incline isfrictionless? Explain using energy.

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4.3 Ratings (932 Votes)

A What is the potential energy of the spring before it isreleasedThe elastic potential energy of the spring Convert Ncm to Nm and cm to mANSWER B What is the kinetic energy and the speed of the See Answer

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