To answer this question do you need to know the formula to get the rate of change of acceleration (a=Δv/Δt; Δv= final velocity - initial velocity) and the formula to find the force of an object given a constant acceleration (F=m*a). Given these two formulas you can applicate them to solve for the mass of an object.
Induced motion or movement
Answer:
90N
Explanation:
Assuming there are no other forces there would be an equal and opposite reaction of -90N. Assuming the question wants the magnitude of the force and not the vector it would be 90N
Answer:
The period of the pendulum will increase.
Explanation:
The period of the pendulum will increase since g efective will decrease.
Then g efective is given by
g efective = g - a < g
If ⇒ T = 2π√(L/g)
and T' = 2π√(L/(g - a))
then T < T'
When the elevator accelerates downward, the hanging mass feels “lighter” – this means that the effective value of g has decreased due to the acceleration of the elevator. Since the period depends inversely on g, and the effective value of g decreased, then the period of the pendulum will increase
.
(i.e., its frequency will decrease and it will swing slower)
The Answer is C.
Type I - Slow Twitch
Type II - Fast Twitch Oxidative
Type III - Fast twitch Glycolytic