A sphere is attached to rod of negligible mass as shown in Figure Q16. The sphere is given a small displacement from its initial vertical position. When the rod is in horizontal position, find its speed v.
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Q16. A sphere is attached to rod of negligible mass as shown in Figure Q16. The sphere is
given a small displacement from its initial vertical position. When the rod is in horizontal
position, find its speed v.
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- Which one is answer ? A or B or C or DA 500 kg cart rests atop a hill 30.0 m high on a roller coaster. Its gravitational potential energy is measured relative to the bottom of the hill. The cart then rolls down the hill. Which of these best describes what is happening in this situation? a. the total mechanical energy of the cart is decreasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is increasing b. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is increasing c. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is decreasing d. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is decreasing, and the gravitational potential energy of the cart is increasing e. the total mechanical energy of…spherical R a vertical axis on frictionless bearings (see the figure above). A massless cord passes around the equator of the shell, over a pulley of rotational inertia I and radius r, and is attached to a small object of mass m. There is no friction on the pulley's axle; the cord does not slip on the pulley. What is the speed of the object when it has fallen a distance d after being released from rest? Use energy considerations. NOTE: Eoncono au ome of and
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- Per: 1. A child is pulling a wagon with toys of varying masses in it. The combined mass of the wagon and the toys is initially 10 kg. The initial velocity is 0.89 m/s. Read each of the sentences that describe a change to the wagon and/or toys. For each scenario, circle whether the kinetic energy increases, decreases, or stays the same. A. The child increases the velocity of the wagon to 0.92 m/s. KE increases KE decreases KE remains the same B. The child removes a toy bear of mass 0.23 kg and the velocity remains the same. KE increases KE decreases KE remains the same C. The velocity of the wagon decreases to 0.27 m/s. KE increases KE decreases KE remains the same D. The child turns the wagon around, and its new velocity is -1.12 m/s. KE increases KE decreases KE remains the same E. The child adds 2.1 kg of rocks to the wagon and the velocity decreases to 0.71 m/s. KE increases KE decreases KE remains the same F. The child adds toys until the total mass is 11.6 kg, and the velocity…A ball with an initial velocity of 10 m/s rolls along a curved surface, as shown in the diagram. The mass of the ball is 100 g. Assume that the only energy conversions that take place are between the kinetic energy and the gravitational potential energy of the ball and calculate the speed of the ball at different positions v1, v2, v3, V4. 10 m/s U3 25 m 20 m 10 m 15 mE. 19.77 m/s 21.85 m/s C. 26.37 m/s F. 1--1 IYYVE On the roller-coaster shown, a car is moving 12 m/s toward the right at point 1. Assuming no friction, calculate the speed of the car at point 4. 3 40 m 26 m 4 15 m 21. A. 20.28 m/s D. 25.18 m/s 24.54 m/s B. 18.94 m/s E. F. C. 23.73 m/s 26.35 m/s 1--1 KTMDG A box slides from rest down a curved slope. Its initial height is 21 m above the ground, and it comes off the slope 7_m above the ground. How fast is the box moving as it leaves the slope? Assume friction is negligible. ^ Pigshow.jpeg Pig show.jpeg
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