Table of Contents
- 1 What is the torque if the force F 2 I 5j 4k acting at the point R 3i 3j +3k M about the origin?
- 2 What is the torque of force acting at a point about the origin?
- 3 What does a couple produce?
- 4 When a constant torque is acting on a body then?
- 5 When the torque acting upon a system is zero Which of the following will be constant?
What is the torque if the force F 2 I 5j 4k acting at the point R 3i 3j +3k M about the origin?
torque=(2i+5j+4k)(3i+3j+3k)0 Nm. therefore torque becomes 0 Nm.
What is the torque of force acting at a point about the origin?
Let a force F be acting on a body free to rotate about a point O and let r the position vector of any point P on the line of action of the force. Then torque t of this force about point O is defined as t =r ×F.
What is the torque of the force F?
Torque is defined as the cross product of force vector F and r, distance from the axis of rotation to the point on which the force is acting.
What is torque of force F 2i 3j 4k?
Dear aspirant, For this question you just simply need to apply the formula for torque which is r×F where r = (3-0)i +(2-0)j+(3-0)k and F=(2i-3j+4k) , just do the normal cross product calculations which will give you 17i -6j-13k. This is your final torque expression.
What does a couple produce?
A couple consists of two parallel forces that are equal in magnitude, opposite in sense and do not share a line of action. It does not produce any translation, only rotation. The resultant force of a couple is zero. BUT, the resultant of a couple is not zero; it is a pure moment.
When a constant torque is acting on a body then?
When constant torque is acting on a body then :- (1) body maintain its state or moves in straight line with same velocity (2) acquire linear acceleration (3) acquire angular acceleration (4) rotates with a constant angular velocity.
What is the magnitude of torque?
The magnitude of a torque about a fixed axis is calculated by finding the lever arm to the point where the force is applied and using the relation |→τ|=r⊥F | τ → | = r ⊥ F , where r⊥ is the perpendicular distance from the axis to the line upon which the force vector lies.
When a mass is rotating in a plane?
When a mass is rotating in a plane about a fixed point, its angular momentum is directed along the axis of rotation.
When the torque acting upon a system is zero Which of the following will be constant?
angular momentum
Explanation : When the torque acting upon a system is zero, the angular momentum is constant and hence is conserved.