to the box using a string. A torque of 20 lb-in is applied to the center of the drum. a) Calculate the force exerted on the box by the string. b) Determine the force needed to be exerted at the end of the 10-in handle. c) Calculate how much the box will advance if the drum is turned by one revolution. d) Determine the speed (in rpm) at which the drum should turn to move the box for 500 ft in 2 minutes. T
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- What are the parameters that impact the magnitude of a torque? a) The magnitude of the force, the duration of the action and the angle of application of the force. b) The magnitude of the applied force, the angle at which it's applied and the distance at which it's applied from the axis of rotation. c) The magnitude of the force, the mass of the object and the duration of the action.Physics 45 Week 8 Worksheet RSL-9 A solid sphere of mass m and radius R is rolling without slipping down a rough ramp that is inclined an angle 0 with the horizontal. a) Apply Fnet-ma to the sphere for the x direction (along the ramp). Neglect air resistance. b) Apply Tnet-la to the sphere. Take torques about the center of the sphere (be careful with signs). c) Combine your equations from parts a) and b) to find a, and the friction force f in terms of g, 0 and any other constants needed (do not describe fusing the coefficient of friction). 梦 0 hpIn class, I would swing my keys around my head on a 58.5 cm long string. If the string pointed down 11.3o from the horizontal and the keys has a mass of 420. g, what was the angular speed of the keys? select the correct option a) 1.83 rad/sb) 9.16 rad/sc) 4.13 rad/sd) 9.25 rad/s
- a) Calculate the rotational inertia for a spoke wheel with mass = 3.1 kg and radius 0.40 meters. b) Initially at rest a constant force of 7 Newtons is applied to the outermost part of the spoke wheel. What torque does the wheel experience? c) If the force is applied constantly for 10 seconds, what is the final angular velocity of the system after 10.0 seconds? Assume the wheel was initially at rest. d) What is the Rotational Kinetic Energy of the spoke wheel after 10 seconds?The string is tied to a 0.60 m wheel. What is the torque created by the 1.07 N of tension in the string?A) determine the angular acceleration of the drum while the force is being applied. B) what was the net torque on the drum during this time?
- Problem 6 - Rolling without slipping A solid ball of uniform density with mass M and radius R rolls without slipping on an incline that makes an angle of 0 with the horizontal, as shown in Fig.6. Recall that the 2MR2 moment of inertia of a solid ball about an axis passing through its center is Icm = 5 ст a) Draw an "extended" free body diagram of the ball indicating where every force acts on the ball. b) What is the angular acceleration of the ball? K-D- c) How fast is the ball's center of mass moving after it has rolled a distance D along the ramp, starting from rest? d) What is the minimum value of the coefficient of static friction u, between the ball and the ramp? e) At any moment in time, what fraction of the ball's total kinetic energy is the rotational about the ball's center of mass? kinetic Figure 6 energyA 95 N force exerted at the end of a 0.50 m long torque wrench gives rise to a torque of 15 N. m. What is the angle (assumed to be less than 90°) between the wrench handle and the direction of the applied force? A) 20° B) 25° 18° 22°