Answer:
P.E = 980 J
Explanation:
Given,
The mass of the rock, m = 1 Kg
The height of the rock from the ground, h = 100 m
The acceleration due to gravity, a = 9.8 m/s²
The gravitational potential energy of the stone is given by the formula
P.E = mgh joules
Substituting the given values in the above equation,
P.E = 1 x 100 x 9.8
= 980 J
Hence, the gravitational potential energy of the stone is, P.E = 980 J
Using the formula t=root of 2h/g then where h=28 and g=9.8 then substitute so the answer is 2.4seconds
A) one ... same current passes through each cpt
Answer:
The linear velocity is
Explanation:
According to the law of conservation of energy
The potential energy possessed by the hoop at the top of the inclined plane is converted to the kinetic energy at the foot of the inclined plane
The kinetic energy can be mathematically represented as
Where is the moment of inertia possessed by the hoop which is mathematically represented as
Here R is the radius of the hoop
is the angular velocity which the hoop has at the bottom of the lower part of the inclined plane which is mathematically represented as
Where v linear speed of the hoop's center of mass just as the hoop leaves the incline and rolls onto a horizontal surface
Now expressing the above statement mathematically
=>
=>
=>
=>
Substituting values
Answer : whats your question v