A gymnast with mass mG = 50.0 kg suspends herself from the lowerend of a hanging rope of negligible mass. The upper end of the rope isattached to the gymnasium ceiling. What is the gymnast’s weight?
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A gymnast with mass mG = 50.0 kg suspends herself from the lower
end of a hanging rope of negligible mass. The upper end of the rope is
attached to the gymnasium ceiling. What is the gymnast’s weight?
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- Two blocks rest on frictionless inclines and are connected by a lightweight string that passes over a pulley of negligible mass. The masses of the blocks are M=3.4kg with an angle incline of 20 degrees and the second block is m=2.6kg with an incline angle of 40 degrees. Find the acceleration of the blocks and tension in the string.A heavy chandelier with mass 125 kg is hung by two chains from the ceiling of a concert hall as shown in the figure below with θ = 37° and θ = 64°. Assuming that the chains are massless, what are the tensions Frı and Fr2 in the two chains?A m1 = 1.35-kg aluminum block and a m2 = 6.85-kg copper block are connected by a light string over a frictionless pulley. The two blocks are allowed to move on a fixed steel block wedge (of angle ? = 31.5°) as shown in the figure. (For aluminum on steel, ?s = 0.61and ?k = 0.47. For copper on steel, ?s = 0.53 and ?k = 0.36.) Answer parts a-b.
- Am, = 1.25-kg aluminum block and am, = 7.95-kg copper block are connected by a light string over a frictionless pulley. The two blocks are allowed to move on a fixed steel block wedge (of angle 8 = 31.0°) as shown in the figure. (For aluminum on steel, µ = 0.61 and H = 0.47. For copper on steel, u, = 0.53 and u, = 0.36.) Aluminum Сopper m2 Steel (a) the acceleration of the two blocks 1.12 m/s? (b) the tension in the string 8.6 Your response differs from the correct answer by more than 10%. Double check your calculations. NTwo carts on a low friction air-track are connected by an unstretched spring. Cart 1 has an inertia of 1.5 kg while cart 2 has an inertia of 2.5 kg. The spring has a spring constant of 10 N/m and negligible inertia. You push cart 1 in the direction of the cart 2 with a constant force of 5.0 N. (a) What is the acceleration of the centre of mass of the cart-spring system? (b) What is the acceleration of each cart the instant you begin to push?A rope one meter long rests on a table where the coefficient of friction is 0.50. What maximum length of rope can hang over the side before the whole rope will slip off?