Answer:
B) Angular velocity
Explanation:
The equivalent of Newton's second law for rotational motions is
where
is the net torque on a system
I is the moment of inertia
is the angular acceleration
From the formula, we observe that if a constant net torque (=different from zero) is applied to an object, than the angular acceleration of the object is non-zero and constant.
But angular acceleration is defined as the rate of change of the angular velocity, :
so, a non-zero angular acceleration means that the angular velocity is changing, so the correct answer is B.
By definition, the centripetal acceleration is given by:
Where,
v: tangential speed
r: radius of the circular path
Clearing the radio we have:
Substituting values we have:
Therefore, the radius of the circular path is equal to 0.60 meters.
Answer:
The radius of the circle is:
0.60 m
option1
Answer:
The machine used is called a squaring shear, power shear, or guillotine.
Explanation:
D, it is considered unethical today
Answer:
43.7 °C
Explanation:
= Coefficient of linear expansion of brass =
= Coefficient of linear expansion of steel =
= Initial length of brass = 31 cm
= Initial length of steel = 11 m
= Total change in length = 3 mm
Total change in length would be
The final temperature is 43.7 °C