The weight of a 22 lb oven door acts vertically through point D. The door is supported by a hinge at point A and twosprings are symmetrically located on each side of the door. The resultant moment about point A of the weight and springforces is zero.NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.8 in.W12 in.5 in.-10 in.-For a = 90°, determine the force needed in each of the two springs. (Round the final answer to three decimal places.)The force needed in each of the two springs islb.

Answered: The weight of a 22 lb oven door acts…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 100P: A uniform disk of mass 500 kg and radius 0.25 m is mounted on frictionless bearings so it can rotate...

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A uniform beam resting on two pivots has a length L = 6.00 m and mass M = 90.0 kg. The pivot under the left end exerts a normal force n1 on the beam, and the second pivot located a distance = 4.00 m from the left end exerts a normal force n2. A woman of mass m = 55.0 kg steps onto the left end of the beam and begins walking to the right as in Figure P10.28. The goal is to find the womans position when the beam begins to tip. (a) What is the appropriate analysis model for the beam before it begins to tip? (b) Sketch a force diagram for the beam, labeling the gravitational and normal forces acting on the beam and placing the woman a distance x to the right of the first pivot, which is the origin. (c) Where is the woman when the normal force n1 is the greatest? (d) What is n1 when the beam is about to tip? (e) Use Equation 10.27 to find the value of n2 when the beam is about to tip. (f) Using the result of part (d) and Equation 10.28, with torques computed around the second pivot, find the womans position x when the beam is about to tip. (g) Check the answer to part (e) by computing torques around the first pivot point. Figure P10.28
A simple pendulum consists of a small object of mass 3.0 kg hanging at the end of a 2.0-m-long light string that is connected to a pivot point. (a) Calculate the magnitude of the torque (due to the force of gravity) about this pivot point when the string makes a 5.0 angle with the vertical. (b) Does the torque increase or decrease as the angle increases? Explain. Figure P8.6
(a) When opening a door, you push on it perpendicularly with a force of 55.0 N at a distance of 0.850m from the hinges. What torque are you exerting relative to the hinges? (b) Does it matter if you push at the same height as the hinges?
Find the net torque on the wheel in Figure P10.23 about the axle through O, taking a = 10.0 cm and b = 25.0 cm. Figure P10.23
What are the necessary conditions for equilibrium of the object shown in Figure P12.1? Calculate torques about an axis through point O.
Three objects of uniform densitya solid sphere, a solid cylinder, and a hollow cylinderare placed at the top of an incline (Fig. CQ10.9). They are all released from rest at the same elevation and roll without slipping. (a) Which object reaches the bottom first? (b) Which reaches it last? Note: The result is independent of the masses and the radii of the objects. (Try this activity at home!) Figure CQ10.9
A uniform disk of mass 500 kg and radius 0.25 m is mounted on frictionless bearings so it can rotate freely around a vertical axis through its center (see the following figure). A cord is wrapped around the rim fo the disk and pulled with a force of 10 N. (a) How much work has the force done at the instant the disk has completed three revolutions, starting from rest? (b) Determine the torque due to the force, then calculate the work done by this torque at the instant the disk has completed three revolutions? (c) What is the angular velocity at the instant? (d) What is the power output of the force at that instant?
Repeat the preceding problem replacing the marble with a hollow sphere. Explain the new results.
MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER ERCP9 8.P.010. A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 44.0-gram mass is attached at the 19.0-cm mark, the fulcrum must be moved to the 39.2-cm mark for balance. What is the mass of the meter stick?
45 kg.…* X = ? +0.4 m -0.5 m→ 30 kg 40 kg The 3m long uniform plank is supported by a fulcrum at the midpoint. Where should a 45kg student must be from the midpoint to be able to balance the plank?
no ai please
A 0.120kg, 50 cm long uniform bar has small 0.055 mass glued to its left end and small 0.110 kg mass glued to the other end. The two small masses can be treated as point masses. You want to balanced this system horizontally on a fulcrum placed just under its center of gravity. How far from the left end should the fulcrum be placed?

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