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018 (part 1 of 3) 10.0 points Assume you are on a planet similar to Earth where the acceleration of gravity g 10 m/s2 . A plane 26 m in length is inclined at an angle of 22.6° as shown. A block of weight 260 N is placed at the top of the plane and allowed to slide down. 260 N 0.3 22.6° The mass of the block is most nearly 1. m 13 2. m 26 kg 3. m ะ 50 4. m 25 5. m 39 6. m 15 7. m 20
8. m 41 9. m 52 019 (part 2 of 3) 10.0 points Calculate the magnitude of the normal force exerted on the block by the plane. 1. IN 240 N 2. IIN80 3. | NI 160 4. INI 200 5. NI 480 6. INIl 120 7. |INI 400 8. IINl 360 020 (part 3 of 3) 10.0 points Calculate the work done on the block by the gravitational force during the 26 m slide down the plane in J. 1. W650 2. W 2400 3. W 1750 4. W 2600 5. W 3690 6. W 5850
2. I80 3. INI 160 4. IIN200 6. IINI 120 8. IMI ~ 360 020 (part 3 of 3) 10.0 points Calculate the work done on the block by the gravitational force during the 26 m slide down the plane in J. 1. W650 2. W2400 3. W1750 4. W 2600 J 5. W 3690 6. W 5850 7. W 3750 8. W 10400 9. W 600Complete all parts or dont do. Thanks
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Answer #1

0.18)The mass of the block is, 260 10 26 kg So the correct option is “2 0.19)From figure 24 cos a (24) +(10) 24 26 0.923 The normal force is (260) (0.923) 240 N So the correct option is 1 0.20)The work done by the gravitational force is Wd sin θ (2604424),+(10), 3010 (24) +(1o) 10 260(26) 26 2600 J So the correct option is 4

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