3. A point mass of 1.50 kg is connected to the end of a 2.00 m long rod of negligible mass. The other end of the rod is fixed to act as the axis of rotation regarding the mass. Three forces act on the system as show in the diagram below. = 15.0 N @ 40.0° and acts 0.750 m from the axis of rotation F1 F2 = 4.00 N @ 70.0° and acts 2.00 m from the axis of rotation F3 = 12.0 N @ 20.0° and acts 0.250 m from the axis of rotation Where the angles are relative to the horizontal. a) What is the Net torque acting? Include the associated direction (CW or CCW)→ answer 1.31 N m CW b) What is the angular acceleration of the point mass? → answer 0.219 rad/s² c) What is the rotational kinetic energy after 5.00 s if the system was initially at rest. answer 3.59 J F1 F3 F2

12 m 12 m A 3 m B 3 m Figure 1 Figure 2 A simple trebuchet is constructed as shown above.The projectile mass, ma = M = 1.50 kg, and the counterweight mass, mg = cM, where c is 7.50 x 102. Relative to the masses of the projectile and counterweight, the mass of the rotating arm is assumed negligible and there is no friction in the pivot.There is a mechanism that stops the arm when it becomes vertical, allowing the projectile to be launched horizontally. {If needed, treat both masses as point masses with moment of inertia = (mass)R2.} a. Determine the tangential speed of the projectile at the top of the motion as it leaves the trebuchet. Blank 1 b. How long is the projectile is in the air? Blank 2 Do Not Enter Units In Answers. Show All Starting Equations And Ideas That Lead To Your Answers. Blank 1 Add your answer Blank 2 Add your answer

QUESTION 23 Three external forces are acting on a uniform, 0.60-kg, 30-cm-long, thin rod that is rotating about an axis perpendicular to the plane of the page and through its center as shown in the diagram below. What is the 1 mL where L is the length of the rod 12 angular acceleration of the disk about the given axis? Hint: /cm.rod %3D and m is the mass of the rod. Uniform Rod +15 cm 12 cm 300 Аxis 2.5 N 4.0 N 2.0 N a. 13,3 rad/s2

A machine part rotates at an angular speed of 0.32 rad/s; its speed is then increased to 2.6 rad/s at an angular acceleration of 0.90 rad/s2. Find the angle through which the part rotates before reaching this final speed. rad

A wheel of inner radius r, = 14.2 cm and outer radius r, = 35.0 cm shown in the figure below is free to rotate about the axle through the origin o. What is the magnitude of the net torque on the wheel due to the three forces shown? (Assume F, = 3.80 N, F, = 6.20 N, and F, = 14.6 N.) N. m F, 45.0°

+, F. You use a wrench to turn a rusty nut. You place your hand at where the black dot is and apply a force F = 110N at an angle 0 = 59 degrees. The distance from your hand to the center of nut d = 30 cm. Calculate the torque in N. m your hand applies. %3D %3D %3D p. 0. MacBook Pro G Search or type URL

Starting from rest, a 10.8cm diameter compact disk takes 7.96s to reach its operating rotational speed of 1920.0 rpm (revolutions per minute). Assume that the angular acceleration is constant. The disk's moment of inertia is 3.88E-5kg.m². How much torque is applied to the disk? Submit Answer Tries 0/10 How many revolutions does it make before reaching full speed? (Do not enter a unit.) Submit Answer Tries 0/10

The 47-kg flywheel has a radius of gyration of ko = 300 mm about its center of mass. (Figure 1) Figure Part A W = If it is subjected to a torque of M = (90¹/2) N m, where is in radians, determine its angular velocity when it has rotated 3 revolutions, starting from rest. Express your answer to three significant figures and include the appropriate units. μà Value Submit Request Answer www. ? M = (9 0¹/2) N.m Units 1 of 1

Practice Problems: Torque Physics 1. A 200 g mass is placed on the meter stick 20 cm from the fulcrum. An unknown mass is positioned 8 cm from the fulcrum to balance the system. What is the mass of this unknown object? Unknown mass T = rx F Page rccw Fulcrum rcw 2. A 250 g mass is placed on the meter stick 30 cm from the fulcrum. An unknown mass is positioned 40 cm from the fulcrum to place the system in equilibrium. What is the mass of the unknown object? 1 / 2 Load: 200-g mass +