Newton’s second law can either be expressed as “resultant force = mass × acceleration” or “The acceleration of an object is directly proportional to the resultant (or net) force, in the same direction as the force, and inversely proportional to the mass of the object.”
Q. What is the condition for rotational equilibrium?
An object is in rotational equilibrium if the velocity of its rotation is constant. An object that is not rotating or an object that is rotating in one direction a constant rate would be considered in rotational equilibrium. To be in rotational equilibrium, the net torque acting on the object must be zero.
Table of Contents
- Q. What is the condition for rotational equilibrium?
- Q. Can 2 unequal forces leave an object in equilibrium?
- Q. Which of the following can have zero resultant?
- Q. What are the following set of forces the resultant of which Cannot be zero?
- Q. What is the vector sum of n coplanar forces each of magnitude f if each force makes an angle of 2π n with the preceding one?
- Q. Which of the following pairs of forces can not be added to give a resultant force of 4 N?
Q. Can 2 unequal forces leave an object in equilibrium?
Two forces with the same magnitude but different directions are not equal forces. If the net force is equal to zero, the object is said to be in equilibrium. Because there is no net force acting on an object in equilibrium, then from Newton’s first law of motion, the object continues to move at a constant speed.
Q. Which of the following can have zero resultant?
In the triangle, addition of the two sides is greater than the third side then the resultant might be zero but when addition of the two sides is less than the third side then the resultant can not zero. The resultant force is zero.
Q. What are the following set of forces the resultant of which Cannot be zero?
Out of the following set of forces the resultant of which can not be zero. A)10,10,10 B)10,10,20 C)10,20,20 D)10,20,40. Answer: Let us first understand the scenarios in which the resultant of forces may become zero.
Q. What is the vector sum of n coplanar forces each of magnitude f if each force makes an angle of 2π n with the preceding one?
Zero. Sence the total angle between (n) coplanar foreces=(2π/2)×n=2π. It means the forces can be repesented by the various sieds of a closed polygon taken in one order, bence their resutant froce is zero. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.
Q. Which of the following pairs of forces can not be added to give a resultant force of 4 N?
Answer. Explanation: It is because maximum Resultant force will be (8+2)=10N and Minimum will be (8-2)=6N. 4N does not lie within this value range Therefore It is not possible to have it as resultant.
