# physics

posted by .

a bug is sitting on a long playing record going at a constant speed.

Given: The record is turnning at a constatn reate of 33.3 revloutions per minute. The bug, whose mass is 1.4g, is sitting 12cm from the center of the record.

Find;

a. how long does it take the bug to go around once?

I am not sure if i am overthinking this or not but would it be but would it be like this.

d=2pir = 73.36 cm on 1 revolution. so the bug will travel 73.36cmX33.3 rpm=2442.88cm in one minute, than divide 2442.88cm/60 seconds to = 40.71cm a second. than 73.36cm divide by 40.71 cm/sec = 1.8 seconds for the length of ride?

b. how fast is the bug going?
v=d/t or 40.75 cm/second

c. how much centripetal force acts on the bug.

• physics -

a,b correct.

Centripetal force= mass*v^2/r

You can work this in the cgs system (centimeter, gram, second) and force will be in dynes, however, I recommend converting to SI units (meters, kg, seconds) and force will be in Newtons.

## Similar Questions

1. ### Physics

A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final …
2. ### Physics

A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final …
3. ### Physics

A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final …
4. ### College Physics

A car (mass 880 kg) is traveling with a speed of 44 mi/h. A bug (mass 7.9 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final …
5. ### Math

If a bug crawls 2cm up and 1cm down each day how long does it take for the bug to reach the top of a 12cm jar
6. ### Physics

A car (mass 800 kg) is traveling with a speed of 37 mi/h. A bug (mass 8.7 mg) is traveling in the opposite direction. What speed would the bug need in order to slow down the truck by one mile per hour in a big bug splash (i.e., final …
7. ### Physics

A thin massless horizontal pipe rotates about a vertical axis with angular speed ω as shown in the figure. A small bug, located at a distance r from the axis, starts crawling inside the pipe at constant speed v (relative to the …
8. ### physics

A bug rides on a phonograph record. In which direction does the change in velocity of the bug point?
9. ### Physics

A bug rides on a turntable which is rotating at 3 rad/s. The moto is turned off, and the bug covers 36 radians before coming to rest. a. What is the angular acceleration of the bug?
10. ### Physics

A bug is on the rim of a 78 rev/min, 12 in. diameter record. The record moves from rest to its final angular speed in 3.29 s. Find the bugâ€™s centripetal acceleration 1.5 s after the bug starts from rest. (1 in = 2.54 cm). Answer …

More Similar Questions