Two bugs, Buzz and Crunchy, are siting on a spinning disk on a horizontal plane. Buzz is sitting halfway and Crunchy is sitting at the outer edge as shown. The radius of the disk is 0.80 m and the disk is rotating with an angular speed of 38 rpm. The coefficient of friction between the bugs and the disk are us = 0.80 and uk= 0.60. What is Buzz's speed, in m/s? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. Buzz Crunchy

A baseball of mass m = 0.56 kg is spun vertically on a massless string of length L = 0.68 m. The string can only support a tension of Tmax = 10.3 N before it will break. a.) What is the maximum possible speed of the ball at the top of the loop, in meters per second? b.) What is the maximum possible speed of the ball at the bottom of the loop, in meters per second?

G=25

Two blocks are attached to opposite ends of a massless rope that goes over a massless, frictionless, stationary pulley. One of the blocks, with a mass of 6.0 kgkg accelerates downward at 3/4g. What is the mass of the other box?

Two blocks of mass m, = 10 kg and mg = 5 kg are connected by a massless string that passes over a pulley as shown in the figure. The system is in static equilibrium. There is friction between m, and the inclined surface (u.-0.4), Neglect the friction between the string and the pulley. Determine the tension in the string. 10 kg 5.0 kg 37 65.35 N () 147.0 N 98.0 N 49.0 N O 52.3 N

A 5.0 g coin is placed 15 cm from the center of a turntable. The coin has static and kinetic coefficients of friction with the turntable surface of μs = 0.80 and μk = 0.50. The turntable very slowly speeds up to 60 rpm. Does the coin slide off?

A ball with a mass of 1.50 kg rolls down a hemisphere from A to B. Se figure. At A, it has a centripetal acceleration with a magnitude of 1.80 m/s² and a speed of 1.20 m/s. At B, it has a centripetal acceleration with a magnitude of 5.50 m/s? and a normal force with a magnitude of 4.30 N. Find the magnitude of the normal force on the ball at A, and the angle 0. Ignore friction everywhere. VA = 1.20 m/s В VB = ? 0= ? R = ?

A child who weighs 300 N is swinging on a rope. At the highest point in the swing, the rope makes a 30 degree angle to the vertical. What is the force of tension in the rope?

A 20kg block and a 2kg block are falling with no air resistance. What is the gravitational force on the 20kg block?

An object weights 5000 N on planet Alpha and 800 N on planet Beta. Planet Alpha has 4 times the mass of planet Beta. What is the ratio of Alpha's radius to Beta's radius? A 50 kg object is moving in uniform circular motion with a radius of 25 m. It takes the object 6 s to make one complete revolution. Find the net force acting on the object.