use the exploration to explain the difference between observed motion, when force is applied in a direction which is same direct
1 answer:
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Answer:
The force does the ceiling exert on the hook is 269.59 N
Explanation:
Applying the second Newton law:
F = m*a
From the attached diagram, the net force in object 1 is:
In object 2:
Adding the two equations:
(eq. 1)
The torque:
Where
I = moment of inertia
α = angular acceleration
If the linear acceleration is
Torque due the tension is equal:
Substituting torque, mass, in equation 1, the expression respect the acceleration is:
Where
W₁ = 75 N
W₂ = 125 N
W = 80 N
The net force is:
Answer:
0.91 J
Explanation:
The kinetic energy of an object is given by
where
m is the mass of the object
v is its speed
For the lemming in this problem, when he jumps, we have:
m = 0.0780 kg is the mass
v = 4.84 m/s is the speed
Substituting into the equation, we find: