Part A Determine the moment of inertia of the composite area about the y axis. Set a = 250 mm , b = 170 mm , h = 110 mm , r = 70 mm. (Figure 1) Express your answer with the appropriate units. HA ? I, = Value Units Figure 1 of 1 >
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- Figure 4.0 cm 30 N 20 N < 1 of 1 In (Figure 1), what is the net torque about the axle? Express your answer in newton-meters to two significant figures. T = Π ΑΣΦ Check your signs. No credit lost. Try again. Submit Provide Feedback Previous Answers Request Answer ? N.mTopic 2 – Summation of Forces Forces are given; Force 1 = 12 N @ 1100 Force 2 = 15 N @2600 Force 3 = 5 i – 6 j N 1. Find the resultant force if they are all added? 2. What are the magnitude and angular direction of the sum of the vectors? 3. F1 o F2=_______________ (Dot Product) 4. F1 x F3 = ________________ (Cross Product)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?
- Item 21 Hide Timer 21 You are designing a rotating metal flywheel that will be used to store energy. The flywheel is to be a uniform disk with radius 29.0 cm. Starting from rest at t = 0, the flywheel rotates with constant angular acceleration 3.00 rad/s about an axis perpendicular to the flywheel at its center. Part A If the flywheel has a density (mass per unit volume) of 8600 kg/m', what thickness must it have to store 800 J of kinetic energy at t = 8.00 s? Express your answer with the appropriate units. HA ? h = Value Units Submit Request Answer Provide Feedback Nex DII DD OOD 80 888 F9 F10 esc F7 FB F3 F4 F5 F6 F1 F2 &QUESTION 6 A main sequence star of mass, M, and radius, R, collapses to a white dwarf star with a radius 1.0% as big as the original star. If w is the angular velocity of the original star, what is the angular velocity of the white dwarf star? Approximate the star to be a uniform solid sphere. а. 10,000w b. 1,000w С. 5,000w d. 20,000w е. 50,000wThree forces are applied to a wheel of radius 0.350 m, as shown in the figure (Figure 1). One force is perpendicular to the rim, one is tangent to it, and the other one makes a 40.0° angle with the radius. Assume that F₁ = 12.4 N, F2 = 14.6 N, and F3 = 8.20 N. Part A What is the magnitude of the net torque on the wheel due to these three forces for an axis perpendicular to the wheel and passing through its center? ΑΣΦ T= 1.83 Submit Previous Answers Request Answer × Incorrect; Try Again Part B What is the direction of the net torque in part A. into the page out of the page. Submit Previous Answers Correct ? N.m
- A bicycle racer is going downhill at 14.0 m/s when to his horror, one of his 2.07 kg wheels comes off when he is 73.0 m above the foot of the hill We can model the wheel as a thin-walled cylinder 850 cm in diameter and neglect the small mass of the spokes Part A How fast is the wheel moving when it reaches the foot of the hill if it roled without slipping all the way down? Submit Part B VAL Request Answer A + How much total kinetic energy does the wheel have when it reaches the bottom of the hill? K-1101290.25 Submit Previous Answers Request Answer ? X Incorrect; Try Again m/s 34. For this problem, you are free to use a table for moments of intertia in your calculation. For this problem, please reference the image below. You are working in your machine shop in Kalamazoo, MI, where you construct the item in the image below. It consists of a tungsten disk of mass 2.4 kg and radius 50 cm. Mounted on this disk is a silicon carbide ring of mass 1.2 kg. This ring has an inner radius 20 cm and outer radius 30 cm. The disk rotates about an axis through it’s center at a rate of 12 rev/s (a) What is the moment of inertia of this system? (b) What is the rotational kinetic energy of this system? axis 50 cm 30 cm 20 cmNeeds Complete typed solution with 100 % accuracy.
- Cons A constant torgue of 25 m - N is applied to the rim of a 15-kg uniform disk of radius 0.30 m. Part A What is the angular speed of the disk about an axis through its center after it rotates 2.0 revolutions from rest? Express your answer using two significant figures. Ην ΑΣφ rad/s Previous Answers Request Answer Submit X Incorrect; Try Again; 5 attempts remainingI Review I Constants You are a project manager for a manufacturing company. One of the machine parts on the assembly line is a thin, uniform rod that is 60.0 cm long and has mass 0.700 kg. Part A What is the moment of inertia of this rod for an axis at its center, perpendicular to the rod? Express your answer with the appropriate units. ? I = Value Units Submit Request Answer Part B One of your engineers has proposed to reduce the moment of inertia by bending the rod at its center into a V-shape, with a 60.0° angle at its vertex. What would be the moment of inertia of this bent rod about an axis perpendicular to the plane of the V at its vertex? Express your answer with the appropriate units. ? I = Value Units Submit Request Answer1