Answer:
1101.96 J
Explanation:
Potential energy at top = mgh = 24*10*5 = 1200J
Kinetic energy at bottom = 1/2*m*v² = 0.5*24*(2.8)²= 94.08 J
Loss of energy = 1200 J - 98.04 J
= 1101.96 J
Thermal energy due to friction =1101.96 J
Answer:
it's b
Explanation:
it's b cause ik I'm not wrong at these I did this when I was a kid and never got it wrong so it's b and will be cause b is the right answer so b it is
No. Mechanical energy is not conserved. There's quite a bit of friction on the slide. So some of the potential energy is lost to heat on the way down, and the child arrives at the bottom with hot pants and less kinetic energy than you might expect.
Answer:
Explanation:
The period of a simple pendulum is given by:
where
L is the length of the pendulum
g is the acceleration of gravity
From this equation we can write
Taking the square of this equation, we get:
So we see that 
is proportional to L and inversely proportional to g. So, we can write:
So the only correct option is
