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1) Carrie pulls a 41.5 kg bin across the floor of her garage using a rope that is attached to the bin. She pulls with a force of 138 N, at an angle of 28.0° above horizontal. The coefficient of kinetic friction between the floor and the box is 0.290. What is the acceleration of the box?
2) Alistair places a 6.40 kg block on an inclined plane that is 23° above the horizontal. The block starts from rest, and in 2.20 seconds, travels 1.40 m. What is the force of friction on the block?
3) A 1.45 kg box is placed on a ramp that is 21° above the horizontal. If the coefficient of static friction is 0.49, and the coefficient of kinetic friction is 0.32, what will happen to the box?
4) Kevin works as a janitor, and he is pushing a fully-loaded recycling bin that weighs 557 N across the floor. He applies a force of 410 N at an angle of 15° below the horizontal. The coefficient of kinetic friction be
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Physics, 23.06.2019 10:30
How long will a plane have to fly continuously with 1100 miles per hour in order to cover the same distance as that from earth to the next star, proxima centauri?
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Physics, 23.06.2019 11:00
The safe load, l, of a wooden beam of width w, height h, and length l, supported at both ends, varies directly as the product of the width and the square of the height, and inversely as the length. a wooden beam 4 inches wide, 9 inches high, and 240 inches long can hold a load of 6810 pounds. what load would a beam 3 inches wide, 8 inches high, and 144 inches long, of the same material, support? (round off your answer to the nearest integer.)
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Physics, 24.06.2019 01:30
The 0.5-kg flyballs of a centrifugal governor revolve at a constant speed v in the horizontal circle of 160-mm radius shown. neglecting the mass of links ab, bc, ad, and de, and requiring that the links support only tensile forces, determine the range of the allowable values of v so that the magnitudes of the forces in the links do not exceed 75 n.
Answers: 3
PLEASE TRY TO ANSWER AS MANY QUESTIONS AS YOU CAN !
1) Carrie pulls a 41.5 kg bin across the floor...
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