Answer:
199.92joules
Explanation:
workdone = Mgh
mass x height x acceleration due to gravity
C. green light
all qn 1,2,3 have same answer ,. Yes,. hope it helps
F = mω²R
F = 15(2π/8.5)²(7.8)
F = 63.93044788...
F = 63.9 N
answer a) is the closest. No idea how they got a value that low unless they used a poor approximation for π.
by multiplying speed with time
