Part A 8.0 N F 75 cm 25 cm What is the net torque on the bar shown in (Figure 1), about the axis indicated by the dot? Suppose that F = 4.0 N. Express your answer with the appropriate units. Α ? T = Value Units
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- Suppose you exert a force of 180 N tangential to a 0.280-m-radius, 75.0-kg grindstone (a solid disk). (a) What torque is exerted? (b) What is the angular acceleration assuming negligible opposing friction? (c) What is the angular acceleration if there is an opposing frictional force of 20.0 N exerted 1.50 cm from the axis?A 35° 1. A force is applied to the control rod AO as shown. Knowing that the length of the rod is 350 mm, compute the moment of the force about point O using a. Vector method: M, =rxF. b. Scalar method: M, = Fd 150 N %3D 70°What is the net torque on the square plate with sides 0.2 m from each of the three forces? F=18 N, F2=26 N, and F3=14 N. Use an axis of rotation perpendular to the square and through the center. The axis of rotation passes through the center and perpendicular to the square. F2 30° ion oxis 3.
- A force in the +y direction applied at the point x = 8.1 m, y = 8.1 m gives rise to a torque of 63.7 Nm about the origin. Determine the magnitude of the force. Express your answer in N, to at least one digit after the decimal point. plz help use g = 9.8A waiter holds two plates of food in one hand. His forearm has a mass of 2.8kg and the centre of mass of his forearm is located 11cm from his elbow joint. The centre of mass of the two plates is located 32cm from his elbow joint and the total mass of the two plates is 1.75kg. His bicep is attached to the bones of his forearm is 3.6cm from his elbow joint. Assume his forearm is held completely horizontal. a. What is the torque produced by the mass of the two plates? Torque = Nm b. What is the torque produced by the mass of the waiter's forearm? Torque = Nm c. What force must be exerted by the waiter's biceps muscle to ensure that the plates and forearm are motionless? =ONŷ Force =4 dots with mass 4kg each are at the corners of a square with 20.0 sides. Find moment of I in axis through the center and perpendicular to the square. a. 3.20x10^3 kg m2 b. 1.28 kg m2 c. 8x10^-2 kg m2 d. 0.32 kg m2
- The wheel has radius R = 60 cm and is free to rotate without friction about a central axle. A force F = 15N is applied to the wheel as shown, at distance r = 20 cm. R from the axle. = 50° a. What is the magnitude of the torque corresponding to the force F, calculated about the axle? b. What is the direction of the torque vector? With the wheel starting from rest, this torque is applied constantly. After three revolutions, its final angular speed is wf = 8.0 s-1. What was its angular acceleration a? C. d. What is the moment of inertia of the wheel? e. Assuming the wheel to be a uniform solid disk, what is its mass? f. Bonus What is the final angular momentum of the wheel?A square metal plate 0.180 m on each side is pivoted about an axis through point o at its center and perpendicular to the plate (Figure 1). For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Applying a torque. Figure F2 0.180 m 0.180 m 45° F3 F1 1 of 1Calculate the torque about the z-axis that is out of the page at the origin in the following figure, given that F,=3N, F2=2N, F3=3N, F4=1.8N. YA ... 30° 2 m 3 m 2 m F3 20 Round your answer to 2 decimal places. Add your answer
- Can you help me with a physics problem?There exists a uniform rod with a L length and a m mass that is held to a wall by a frictionless hinge at its base and by a horizontal string at a x distance from the hinge. See picture. 1. What is the tension in the string and the horizontal and vertical components of the hinge's force?2. Theoretically, if the string were to be cut. What would the angular acceleration of the rod be just after it has been cut?A 6.20 [kg] square plate has side length of 3.25 [m] and is pivoted about an axis through its center and perpendicular to the plate. The following forces act on the plate: F1 = 48.0 [N], F2 = 50.0 [N], and F = 42.0 [N], with the directions shown in the figure below. A. What is the net torque on the square plate due to the forces? F2 F1 B. What is the angular acceleration of the plate? Hint: The moment of inertia for a plate of length a and width b rotating about its center is Icom =M(a² + b²), where M is the mass of the plate. C. If the plate is initially at rest, what is its angular 45° velocity after 5.00 [s]? F2In the figure, the signs are correctly given as: W T O sign? sign? sign? ✓ Large wheel (big circle), bearing (grey) and axle (black). The solid arrows represent friction forces. The open arrow shows the direction of rotation (CW). Suppose the big wheel we use in this lab has a radius of 25 cm. If the hanging block drops 60 cm, what is the magnitude of the angular displacement of the big wheel? rad