Answer:
a. L =3.465 J.s
b. 3.186 rad/s
c. T = 1.972 s
d. Lp = 0.022 J.s; up or down, depending on the direction of L
Explanation:
(a)We have the formula for angular momentum as
L = I*w where I = moment of inertia =
L =
(b) ω = M*g*D/L
where D = L/2 = 0.96/2 = 0.48m
ω = (23* 0.48/3.465) rad/s = 3.186 rad/s
(c) T = 2π/ω
T = 2*π/3.186 s = 1.972 s
(d) Lp =
Solving with mass M, D and angular velocity ω
Lp = 0.022 J.s; up or down, depending on the direction of L
10.92N
Explanation:
Given parameters:
Mass of truck = 2.964kg
Velocity of truck = 7m/s
Time taken = 1.9s
Unknown:
Average force on the car = ?
Solution:
According to newton's third law of motion "action and reaction are equal and opposite".
The force with which the truck struck the fence is the same as the force the fence acted on the truck with but in another direction.
From newton's second law:
Force = mass x acceleration
We know that acceleration is the change in velocity with time;
acceleration =
Force = mass x
Force = = 10.92N
learn more:
Newton's laws brainly.com/question/11411375
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