<span>The volcanic land forms at divergent ocean plate boundaries are oceanic ridges.</span>
Answer:
changing the force to point right is the correct answer :)
Answer:
time is 0.42 sec
Explanation:
Given data
radius = 23 m
angular acceleration = 5.7 rad/s²
to find out
time
solution
we know that radius is constant so that
tangential acceleration At = angular acceleration × radius ............. 1
tangential acceleration = 5.7 × 23 = 131.1 m/s²
and
radial acceleration Ar = (angular velocity)² × radius ........................2
we consider angular velocity = ω
this is acting toward center
so
compare 1 and 2
At = Ar
5.7 r =ω³ r
ω = √5.7 = 2.38746 rad/s
so
ω = 5.7 t
2.387 = 5.7 t
t = 2.387 / 5.7
t = 0.4187
time is 0.42 sec
Answer with Explanation:
We are given that
Mass of adult,M=75 kg
Length of board=l=9 m
Mass of child=m=25 kg
a.Let pivot placed at point O so that the board is balanced ignoring the board's mass
Moment about the point O
Hence, the pivot placed at 2.25 m from the adult.
b.Mass of board=m''=15 kg
Center of board=
Moment about point O
Hence, the pivot point is 2.5 m from the adult.
