10. A ball is suspended from a vertical spring with spring constant of 82.7 N/m. What is the mass of the ball? a I x=0 Ax=2.7 cm I a. 23 g b. 2.2 g c. 2.2 kg d. none of the above:
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- 3. Two blocks with unequal masses, M and m (M> m), are connected by a light, very long string passing over a pulley of negligible mass, as shown in the figure, and then released. Friction is negligible. 4 a. If one of your classmates calculated that, once released, the acceleration of the blocks would beg, without doing any calculations, say whether or not this could be a reasonable value for the acceleration. b. Draw and label a free body diagram (FBD) for each block. (Be sure your drawings show clearly any information you know about the directions and relative magnitudes of the forces.) Rank the relative magnitudes of all forces in your FBDS. (I'm looking for a single ranking that includes every different force drawn and labeled in both FBDS, separated by , or =.) heavy block: light block:2. A baggage handler drops your 10.0 kg suitcase on a conveyor belt running at 2.0 m/s. The materials are such that us = 0.50 and k = 0.30. How far is your suitcase dragged before it is riding smoothly on the belt?A very large cat sits at the center of a swing. Two scales are attached to the ropes. One scale reads 5 kg.A. What does the second scale read?B. What is the combined weight of the cat and swing?
- 7. You put a box on a skateboard and give it a quick push with a certain force. It starts to move. After it leaves your hand, it will... * a. Continue at a constant speed forever. O b. Slow down constantly until it stops. c. Speed up constantly forever. d. Speed up for a little while, then go at a constant speed forever. e. Speed up for a little while, go at a constant speed for a while, then slow down to a stop. sheet ofoa O O3. A mobile is constructed of light rods, light strings, and beach souvenirs as shown in the figure below. If m4 = 12.0 g, find values (in g) for the following.(Let d1 = 4.50 cm,d2 = 6.10 cm,d3 = 2.40 cm,d4 = 4.40 cm,d5 = 2.90 cm, and d6 = 3.50 cm.) d) What If? If m1accidentally falls off and shatters when it strikes the floor, the rod holding m4will move to a vertical orientation so that m4 hangs directly below the end of the rod supporting m2.To what values should m2 and m3 be adjusted so that the other two rods will remain in equilibrium and be oriented horizontally? (Enter your answers in g.)7. You put a box on a skateboard and give it a quick push with a certain force. It starts to move. After it leaves your hand, it will... * a. Continue at a constant speed forever. O b. Slow down constantly until it stops. c. Speed up constantly forever. d. Speed up for a little while, then go at a constant speed forever. e. Speed up for a little while, go at a constant speed for a while, then slow down to a stop. sheet of oa
- 1. Force required to pull the blocks 2. If the force is transferred to the top block, will the top block slide? 500kg u=0.8 >F l000 KgA 2.4-kg ceramic bowl falls to the floor. During the 0.018-s impact, the bowl experiences an average force of 750 N from the floor. The bowl is at rest after the impact. From what initial height did the bowl fall? a. 1.6 m b. 2.8 m c. 3.2 m d. 5.6 mA box is being pulled to the right over a rough surface. T> fk, so the box is speeding up. Suddenly the rope breaks. What happens? The box Select one: a. Slows steadily until it stops b. Continues with the speed it had when the rope broke С. Continues speeding up for a short while, then slows and stops. O d. Keeps its speed for a short while, then slows and stops. e. Stops immediately
- A) 10 kg m B) I kg.m C) 100 kg.m 9 and 10) 2-kg weight which is attached to a 1.5 m length string, is released from rest when it is at position A. Determine a) its specd and b) the tension in the cord when the bob passes through its lowest position, B. 9) Speed A) 1.25 m/s B) 2.28 m/s C) 3.98 m/s D) 4.56 m/s E) 5.42 m/s 1.5 m 10) Tension A) 51.96 N B) 58.90 N B C) 66.26 N D) 89.89 N E) 95.12 N6. The reading on the vernier caliber is: a. 1.05 cm b. 4.46 cm c. 1.06 cm d. 4.48 cm 7. For the force diagram 1 14 0 1,46 5 2 H cm scale 10 Vernier sca1. Two masses m, and m, are connected by a string which passes over a massless, frictionless pulley. Mass m, > m,. When released from rest the acceleration of the system is: т+ m, а. д m- m 1 m,- m. 1 2 b. g m,+ m, m. С. д m,- m m,m, d. g т,-т, т, е. д m,+ m, 1