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Practice_Midterm_1

# Practice_Midterm_1 - Physics for Scientists and Engineers I...

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Physics for Scientists&Engineers 2 Physics for Scientists and Engineers Physics for Scientists and Engineers I I Spring 2008 Practice Midterm 1

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Physics for Scientists&Engineers 2 Problem 1 Problem 1 A 1.81 kg mass is suspended from a string which is pulled upward. The mass accelerates upwards with an acceleration of 3.50 m/s 2 . What is the tension in the string?
Physics for Scientists&Engineers 2 Problem 1 - Solution Problem 1 - Solution A 1.81 kg mass is suspended from a string which is pulled upward. The mass accelerates upwards with an acceleration of 3.50 m/s 2 . What is the tension in the string? T ! mg = ma T = mg + ma = m a + g ( ) = 1.81 kg ( ) 3.50 m/s 2 + 9.81 m/s 2 ( ) T = 24.1 N

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Physics for Scientists&Engineers 2 Problem Problem 2 2 An object slides down an inclined plane without friction. If it is released from rest and reaches a speed of 4.253 m/s after sliding a distance of 1.73 m, what is the angle of inclination of the plane with respect to the horizontal? Please note: Give your answer in degrees!
Physics for Scientists&Engineers 2 Problem Problem 2 - Solution 2 - Solution An object slides down an inclined plane without friction. If it is released from rest and reaches a speed of 4.253 m/s after sliding a distance of 1.73 m, what is the angle of inclination of the plane with respect to the horizontal? Please note: Give your answer in degrees!

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Practice_Midterm_1 - Physics for Scientists and Engineers I...

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