At a construction site, a 16.0 kg bucket of concrete is connected over a very light frictionless pulley to a 390 N box on the roof of a building. (See the figure.) There is no appreciable friction on the box, since it is on roller bearings. The box starts from rest. (Figure 1) Figure Building < 1 of 1 Part A Find the acceleration of the bucket. a = 14.57 ΑΣΦ Submit Previous Answers Request Answer × Incorrect; Try Again Part B ? m/s² How fast is the bucket moving after it has fallen 1.50 m (assuming that the box has not yet reached the edge of the roof)? v = ΕΕ ΑΣΦ ? m/s

ore ge.co TED CCU... ect n ol.sona- om bject Pool epartment... 24,919 3 9. A mass m₁ = 19.0 kg is connected by a light string that passes over a pulley of mass M = 14.0 kg to a mass m₂ = 9.50 kg sliding on an inclined frictionless surface that makes an angle of 28° with the horizontal (see figure). There is no slippage between the string and the pulley. What is the magnitude of the acceleration of the system of masses? (The moment of inertia of the pulley is Mr².) m/s² 20 F3 $ 4 % 5 F5 6 tv ♫ e MacBook Air & 7 44 F7 m₂ 8 m₁ 9 O FO O A ISOIH by mi 04 M quies or rne puffer

Mass of plane: 22,000 kg Tension, T: 400 N Determine the reactions at A and each of the two wheels at B (in Newtons). 30° T = 400 N 0.4 m BA+ 0.8 m 6 m- G B 3 m - 1 attachment -

Two blocks of masses m1 and m2 string that passes over the very light pulley with low friction bearings shown in (Figure 1). Figure 1 of 1 2

A bug has a mass of 3 g and is rotating around acompact disk. Its velocity is 1.2 m/s. If the cd was rotating anyfaster, the bug would fly off. The coefficient of static frictionis 0.25.a) What is the magnitude of the frictional force on the bug?b) What is the magnitude of the centripetal force on the bug?c) What is the magnitude of the bug's acceleration?d) What is the radius of the cd?e) What is the period of one revolution for the bug?

MA=2Kg Note W= mg Where g= 9.81 m/s" B MB=4 kg Det. the rcceleration. n @ w/c the 4kg bleck B will descodl o iF we 4 kg black B ull desce d iF we nglect Friction on the pulley and also in the horizantal plane. bi) Det the tonsion n the esrd e mea if we neglect Friction. OIF the cocpFicient of Fictioe M=0:36 betueen the block the honzontad plane , determine the tensfon m the card (Show the Oomplett Soution

You have a grindstone (a disk) that is 150.92 kg, has a 0.365-m radius, and is turning at 59.859 rpm, and you press a steel axe against it with a radial force of 46.387 N. Assuming the kinetic coefficient of friction between steel and stone is 0.582. How many turns will the stone make before coming to rest? Round your answer to the third decimal place.

(a) Convert 45.0° to radians.   (b) Convert 11.0 rad to revolutions.   (c) Convert 74.5 rpm to rad/s.

A 0.11 kg ball is about to roll off the edge of a 12.51 m high table. What is its current PE? No unit is required for the final answer. Round your answer to 2 decimal places.

1.0m 3.0m 0.5m mi m, PA N, 5. The drawing above shows two objects on a board supported at two locations. The m; = 40 kg (centered over P), m2=20 kg and m3=10 kg. a. Show the forces acting on the board below with arrows with labels beginning at their approximate point of application (see example for the force exerted by m;). (Don't forget the gravitational forces acting on the board.) P F1