In question 1 can you explain part b I don’t understand how the moment of inertia was deduced then on the right it becomes negative and the R becomes squared please explain this
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- A cyclist rides a bicycle with a wheel radius of 0.500 m across campus. A piece of plastic on the front rim makes a clicking sound every time it passes through the fork. If the cyclist counts 320 clicks between her apartment and the cafeteria, how far has she traveled? (a) 0.50 km (b) 0.80 km (c) 1.0 km (d) 1.5 km (e) 1.8 kmIf you are having trouble opening a stuck jar lid, you can use a rubber pad to help you grip the lid and twist. Explain the purpose of the rubber pad and how it helps you to unscrew the lid. (Assume that the rubber pad has negligible thickness, i.e. it will not increase the radius of the jar a. lid.) b. In Case A, a ball is released from rest at the top of a frictionless hill of height h. In Case B, an identical ball is released from rest at the top of a hill of height h with sufficient friction that the ball can roll without slipping. In which case does the center of mass of the ball have a larger speed at the bottom of the hill or is it the same in both cases? Explain.A 120 N is at rest on a rough in a line making an angle of 20° with the horizontal. The roller has a radius of 0.40 m. as indicated in the figure.a. Calculate the force P that is required to push the roller at rest on the rough incline surface.b. Calculate the normal reaction at the point of contact between the roller and the rough inclined surface.c. Calculate the force P required to pull the roller at rest on the rough incline surface.
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- The spool shown in (Figure 1) has a mass of 130 kg and a radius of gyration kg = 0.3 m. Figure 250 mm G A -400 mm P Part A If the coefficients of static and kinetic friction at A are μ = 0.2 and = 0.15, respectively, and P = 700 N, determine the angular acceleration of the spool. Express your answer in radians per second squared to three significant figures. VO ΑΣΦ ↓↑ vec a= 13.2 Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Provide Feedback ***** www. ? rad/s² Next >A puck of mass m - 1.20 kg slides in a circle of radius r - 20.0 cm on a frictionless table while attached to a hanging cylinder of mass M - 2.70 kg by a cord through a hole in the table. What speed keeps the cylinder at rest? Number i Units 228 E MDetermine the force P required to maintain the 165-kg engine in the position for which 0 = 36°. The diameter of the pulley at B is negligible. Answer: P = i 3.0 m 3.0 m 165 kg B N
- A spool of mass m = 2 kg rests on an incline as shown in the figure. The inner radius of the spool is r = 200 mm and the outer radius is R = 500 mm. The coefficient of friction between the spool and the incline is u = 0.4, and the angle of incline 0 = 1. Which way does the force of friction act, up or down the incline? 60°. R 2. What is the required horizontal pull T to balance the spool on the incline? T 3. Is the spool about to slip?Blocks of mass m1 and m2 are connected by a light string over a pulley, as shown. A) Find an expression for the acceleration of block m2 if the pulley is massless and frictionless, and the surface is frictionless. B) repeat part a for the case where the surface has coefficient of friction µ and the pulley is a frictionless disk with mass M and radius R.2. A cylindrical plug A of mass ma = 0.5 B kg is released from rest at point B and slides down smooth circular guide with a radius r= 2 m, as shown in the Figure. The plug strikes the block C of mass mc = 1.2 kg and becomes embedded in it. After the impact plug-block system - travel a rough surface S with coefficient of kinetic friction uk = 0.3. Neglect the air friction for the following calculations. (a) Calculate the work done on the plug due to the displacement in the circular path. (b) Calculate the velocity of the plug-block system just after the strike. (c) Before coming to rest how much distance the block and plug will travels. Also calculate the deceleration rate in this distance.