R2 R 1.50 kg

A uniform beam weighing 10 N sits at rest across two triangular stands. The beam has a length of 1.0 m. Assume the left end of the beam is at origin, the left stand is at position 0.10 m and the right stand is at position 0.80 m. What is the magnitude of the normal force of the left stand acting on the beam, in Newtons? (Hint: Clearly draw a diagram with the pivot, forces, and r associated with each force.) 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.

To loosen a pipe fitting, a plumber slips a piece of scrap pipe (a "cheater") over his wrench handle. He stands on the end of the cheater, applying his 900 N weight at a point 0.80 m from the center of the fitting. The wrench handle and cheater make an angle of 19° with the horizontal. Find the magnitude and direction of the torque he applies about the center of the fitting. (680 Nm) F-900N

A coin of mass m=10.00 g is placed at R=16.00 cm from the center of a rotating, horizontal turntable. The coin has static and kinetic coefficients of friction with the turntable surface of u =0.90 and HK = 0.72, respectively. (a) If the turntable is sping at an angular velocity of 5.20 rad/s, how much is the friction between the coin and the turntable? Answer: (b) What is the maximum angular velocity at which the turntable can spin without the coin sliding? Answer: rad/s.

A child's top is held in place upright on a frictionless surface. The axle has a radius of r = 3.21 mm. Two strings are wrapped around the axle, and the top is set spinning by T T applying T = 1.40N of constant tension to each string. If it takes 0.590 s for the string to unwind, how much angular 2r momentum L does the top acquire? Assume that the strings do not slip as the tension is applied. R P h kg-m? %3D S Point P is located on the outer surface of the top, a distance h = 27.0 mm above the ground. The angle that the outer surface of the top makes with the rotation axis of the top is 0 = 22.0°. If the final tangential speed v, of point P is 1.95 m/s, what is the top's moment of inertia I? 2r T. I = kg-m?

A thin rod of mass 0.650 kg and length 1.48 m is at rest, hanging vertically from a strong, fixed hinge at its top end. Suddenly, a horizontal impulsive force 16.7 N is applied to it. Suppose the force acts at the bottom end of the rod. Find the acceleration of its center of mass.

A sphere of mass 5 kg and a block of mass m2 =3 kg are connected by a light cord that passes over a pulley as shown in Figure. The radius of the pulley is R=20 cm, and the mass of the thin rim is 1 kg. The spokes of the pulley have negligible mass. The block slides on a horizontal surface. The kinetic coefficient of friction between block and horizontal surface is 0.1 Find for the linear acceleration of the two objects,

If the distance h is 1.52 m , what is the vertical component of the force exerted on the wheel A by the track?               If the distance h is 1.52 m , what is the vertical component of the force exerted on the wheel B by the track?          Find the maximum value h can have without causing one wheel to leave the track.      Thank you!

he wheels of a wagon can be approximated as the combination of a thin outer hoop, of radius ?h=0.421 mrh=0.421 m and mass 5.27 kg5.27 kg, and two thin crossed rods of mass 7.37 kg7.37 kg each. A farmer would like to replace his wheels with uniform disks ?d=0.0588 mtd=0.0588 m thick, made out of a material with a density of 6450 kg6450 kg per cubic meter. If the new wheel is to have the same moment of inertia about its center as the old wheel about its center, what should the radius of the disk be?

Can somebody help please