Answer:
U can prevent electric shock by not touching something that have electric. For example like you bath tub or you front door handle.
Typically a scaffolding has two ropes to support it. One
on the left most side while the other one is on the right most side. Based on
equilibrium rule, the summation of forces must be 0. The downward force is the
weight of person and scaffolding, while the upward force are the tensions on
the two ropes, hence:
Weight person + Weight scaffolding = 2 * Tension
500 N + Weight scaffolding = 2 * 400 N
Weight scaffolding = 300 N
Answer:
f = 686N
Explanation:
parameters given ;
mass = 70kg
force = ?
acceleration due to gravity = 9.8m/s²
from the formula for finding force ,
force is equals to mass of an object multiplied by its acceleration due to gravity
i.e
f = ma
f = 70 × 9.8
f = 686N
Therefore the force that she uses to push she pushes on the ground before she stands up is 686NEWTON.