This is true, The total energy when a body falls freely towards earth remains constant.
Answer:
0.51 m
Explanation:
from the question we are given the following
weight of the crate = 36 N
weight of the plank = 21 N
distance of of the balance from the left end = 0.3 m
from the diagram attached, CG is the center of gravity ( the point near or within a body through which its weight can be assumed to act ), taking the CG as where the weight of the plank acts and it being at a distance L from the support
we can find the distance of the center of gravity just as we would find the moment about the support balance
therefore
36 x 0.3 = 21 x L
10.8 = 21L
L = 0.51 m
The center of gravity is 0.51 m to the right of the support.
Answer:
1. An object in motion will stay in motion: A car, and its breaks.
2. Force = mass x acceleration: Kicking a ball.
3. Equal or Opposite reaction: Tugging on your dogs leash as hes trying to run off.
Explanation:
Answer:
Simple machines are useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities. Simple machines that are widely used include the wheel and axle, pulley, inclined plane, screw, wedge and lever.
The answer is (A) hope it helps
