As this mechanical energy is associated with height, it would be "Potential Energy" in particular.
U = mgh
U = F.h
U = 1.5 * 4
U = 6 Joules
So, 6 J of energy is lost before it hits the ground.
Hope this helps!
Answer:
The force that cause the centripetal acceleration is the static friction, and the briefcase begin to move if the force of centripetal acceleration exceeds the force due to the static friction
Explanation:
Given data:
r = radius = 54.5 m
v = speed of the car = 12.4 m/s
The force due to the static friction that is exerted on the curve in the road is what causes the centripetal acceleration. If the force due to centripetal acceleration is greater than the force of static friction, then the briefcase will begin to roll.
Answer:
I= 6.292 kg.m²
Explanation:
Given that
m = 1.3 kg
Side of square a= 1.1 m
The distance r
The moment of inertia I
The axis passes through one of the mass then the distance of the that mass from the axis will be zero.
I = m a² + m a² + m r²
By putting the values
I = m a² + m a² + m r²
I =m( 2 a² + r²)
I =1.3( 2 x 1.1² + 2 x 1.1²)
I = 1.3 x 4 x 1.1² kg.m²
I= 6.292 kg.m²
Both will hit the ground at the same time because their initial vertical velocity is the same and they are accelerating downward at the same rate (-9.8 m/s^s). Ball A will travel further because it has a greater horizontal velocity and both balls have a horizontal acceleration of 0. Their horizontal velocity will remain contestant and they will travel for the same amount of time. The if t is constant and the v of ball A is greater then D will be greater in the equation
D (distance) = vt+1/2•a•t^2