Exercise 3 The connected bar BC is used to increase the lever arm of the crescent wrench as shown. If a clockwise moment of MA-500 N-m is needed to tighten the nut at A and the extension d = 800 mm, determine the required force F in order to develop this moment. A 400 mm 30° F

Problem Set 6 (Rotational Kinetic Energy) A metal block with mass m= 7.50 kg is connected by a cord wrapped around a 1.25-kg hollow cylinder pulley with a frictionless axle as shown. The surface of the incline has a coefficient of friction Hk = 0.30. As the block slides down the inclined plane from rest at an angle of 35°, it pulls the cord and causes the pulley to rotate. If the inclined plane has a length of 2.25 m, calculate the speed v of the block before it reaches the bottom. The pulley has a moment of inertia of a solid disk, I = mr? and a radius r = 0.25 m. 2 mp = 1.25 kg mb = 7.50 kg 2.25 m Hk = 0.30 35°

A 7760 kg space probe, moving nose-first toward Jupiter at 73.9 m/s relative to the Sun, fires its rocket engine, ejecting 83.0 kg of exhaust at a speed of 248 m/s relative to the space probe. What is the final velocity of the probe? Number Units

Assignment 11. Rotational Motion Problem 7.41 A solid cylinder with a radius of 3.0 cm has the same mass as a solid sphere of radius R. Part A R= If the sphere has the same moment of inertia about its center as the cylinder about its axis, what is the sphere's radius? Express your answer with the appropriate units. Submit 0 HÅ Value Provide Feedback Request Answer Units XXX 11 of 17 ? Review | Constants I Periodic Table Next >

Problem 3 A log rolling downhill has an initial velocity of 0.5 m/s. The log is 2.0 m in length and 0.3 m diameter. It is of uniform density and has mass of 25 kg. If the log rolls without slipping, find the velocity when it has traveled a distance of 5.0 m down the slope of 30 degree pitch. -50 30° 0.5M/S

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