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img084 - 77777 77777 17 A solid ball of radius R = 10 cm(I...

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Unformatted text preview: 77777 77777 17. A solid ball of radius R = 10 cm (I = (2 / 5)M R2) rolls 3.00 111 down along an incline tilted at 30 degrea to the horizontal to a flat section. At what speed does it leave the incline? (1)_4.58 m/s (2) 3.74 m/s (3) 5.92 m/s (4) 8.37 m/s (5) 6.48 m/s 18. A solid ball of radius R = 10 cm (I = (2/5)MR2) rolls 5.00 111 down along an incline tilted at 30 deg-refi to the horizontal to a flat section. At what speed does it leave the incline? (1) 5.92 m/s (2) 4.58 m/s (3) 3.74 m/s (4) 8.37 m/s (5) 6.48 m/s 19. At what speed will a 10,000 N car round a. 52-m—radius curve, banked at a 45° angle, if no friction is required between the road and tires to prevent the car from slipping? @23 m/s (2) 17 m/s (3) 27 m/s (4) 35 m/s (5) 52 m/s 20. At what speed will a 10,000 N car round a. 30m—radius curve, banked at. a 45° angle, if no friction is required between the road and tires to prevent the car from slipping? (l) 17 m/s (2) 23 m/s (3) 27 m/s (4) 35 m/s (5) 52 111/5 21. At what speed will a 10,000 N car round a 74-m—radius curve, banked at a 45° angle, if no friction is required between the road and tires to prevent the car from slipping? (1) 27‘m/s (2) 17 m/s (3) 23 m/s (4) 35 m/s (5) 52 m/s 22. A roller coaster, loaded with passengers, has a mass of 2 000 kg; the radius of curvature of the track at the bottom point of the dip is 24 in. If the vehicle has a speed of 18 m/s at this point, what force is exerted on the vehicle by the track? @4.7 x 104 N (2) 2.3 x 104 N (3) 7.0 x 104 N ’ (4) 1.0 x 104 N (5) 1.8 x 104 N 23. A roller coaster, loaded with passengers, has a mass of 1 000 kg; the radius of curvature of the track at the bottom point of the dip is 24 in. If the vehicle has a speed of 18 m/s at this point, what force is exerted on the vehicle by the track? (1) 2.3 x 104 N (2) 4.7 x 104 N (3) 7.0 x 104 N (4) 1.0 x 104 N (5) 1.8 x 10‘ N 24. A roller coaster, loaded with passengers, has a mass of 3 000 kg; the radius of curvature of the track at the bottom point of the dip is 24 m. If the vehicle has a speed of 18 m/s at this point, what force is exerted on the vehicle by the track? (1) 7.0 x 104 N (2) 2.3 x 10‘ N (3) 4.7 x 104 N (4) 1.0 x 104 N (5) 1.8 x 104 N 25. An object when orbiting the Earth at a height of three Earth radii from the center of the Earth has a. weight of 1.00 N. What is the object‘s mass? (9 at the surface of the Earth is 9.80 m/sz) @0920 kg (2) 1.84 kg (3) 2.76 kg (4) 0.306 kg (5) 0.102 kg 26. An object when orbiting the Earth at a height of three Earth radii from the center of the Earth has a weight of 2.00 N. What is the object’s mass? (9 at the surface of the Earth is 9.80 111/82) @184 kg (2) 0.920 kg (3) 2.76 kg (4) 0.305 kg (5) 0.102 kg 19 ...
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