Aconstant net torque is applied to an object. which one of the following will not be constant?
a) angular acceleration
b) angular velocity
c) moment of inertia
d) center of gravity

B) Angular velocity

Explanation:

The equivalent of Newton's second law for the rotational motions can be written as:

where

is the net torque applied to the object

I is the moment of inertia

is the angular acceleration

From the formula we see that when a constant net torque is applied, then the object also has a constant angular acceleration, .

But we also know that

where is the angular velocity: so, a constant angular acceleration means that the angular velocity of the object is changing, so the correct answer is

B) Angular velocity

(moment of inertia and center of gravity do not change since they only depend on the mass and the geometry/shape of the object, which do not change)

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force