Physics Undergraduate almost 7 yearsago

半径が一定の速度で減少する円運動の様子を問う力学の問題がわかりません

2 on a frictionless table goes round in a circle on a light string that passes through a e 85 Shown. Initially the mass is a distance 7。 from the centre and is turning With のThe string is pulled with a constant velocity starting at ime だ0, so that ce to the mass decreases with time. 『 の and then show that for //r2、 の=4 の0.

Physics Undergraduate about 10 yearsago

慶應・上智・早稲田だったらどこがいいですか？

Physics Undergraduate about 10 yearsago

MITに入りたいです。あとの4年間、どんな生活、勉強をすれば良いですか??