Answer:0.316 rad/s
Explanation:
Given
mass of Person 
velocity of person 
diameter of turntable 
moment of Inertia of the table 
Moment of inertia of Person I
initial angular velocity 
Conserving Angular momentum
, where 
I believe the answer is <span>300,000 years</span>
1) A The 78g
2) C Push on the wagon in the opposite direction as Jack with a force that is the same as Jack is applying.
Answer
given,
Weight of the child = 110 N
length of the swing,L = 2 m
now, calculating the potential energy when the string is horizontal
Potential energy = m g h
now, h = L (1 - cos θ) where θ is the angle made by the string with the vertical.
PE = m g L (1 - cos θ)
when rope is horizontal θ = 90°
PE = 110 x 2 (1 - cos 90°)
PE = 220 J
now, calculating potential energy when string made 25° with horizontal
PE = m g L (1 - cos θ)
when rope is horizontal θ = 25°
PE = 110 x 2 (1 - cos 25°)
PE = 20.61 J
Answer:
f=ma......10N=0.2a....=50m/s
