Physics, 16.11.2020 02:00 tiffanybrown703
REALLY NEED HELP, 3 QUESTIONS 20 POINTS. ONLY ANSWER IF YOU KNOW THE CORRECT ANSWER. DO NOT ANSWER WITH "I DON'T KNOW, SORRY" JUST FOR THE POINTS. Thanks very much, have a great day. ( I Will report you if you answer with "I don't know, sorry"
1) A spring with a natural height of 60 mm is compressed by a 300 g mass to a new height of 54 mm.
ï‚· Find the spring constant in SI units.
ï‚· Find the height of the spring if the 300 g mass were replaced by a 400 g mass
2) A spring is stretched by 2m with a force of 100 N. Calculate its spring constant.
3) You have just bought an innerspring mattress that contains coil springs in a rectangular array 20 coils wide and 40 coils long. You estimate that when you lie on the mattress, your weight is supported by about 200 springs (about one-fourth of the total number of springs in the mattress). You observe that the springs compress
about 2.0 cm when you lie on the mattress. Assuming that your weight of 600 N is supported equally by 200 springs, find the force constant of each spring.
Answers: 2
Physics, 22.06.2019 19:10
3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0
Answers: 2
REALLY NEED HELP, 3 QUESTIONS 20 POINTS. ONLY ANSWER IF YOU KNOW THE CORRECT ANSWER. DO NOT ANSWER W...
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