An object is lifted 2 m above the ground. How much GPE does it have? A. 200 J
B. Not enough info
C. 20 J
D. 2 J

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

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How many times did thomas edison mess up the light bulb