A cylinder of weight W1 5 150 lb is supported at two points, 1 and 2, as shown. Neglect friction at the two points of contact. Normal forces N1 and N2 are (in lb):

(A) 75, 130

(B) 130, 75

(C) 125, 150

(D) 75, 120


(A) 75, 130

Physics & Space Science

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The Richter magnitude scale measures an earthquake's

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A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 24 m/s west, and the total acceleration of the car is 2.5 m/s2 53° north of west. Which of the following is correct?

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If an interstellar gas cloud shrinks in size, what does the law of conservation of energy predict it will do?

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