Advertisements
Advertisements
प्रश्न
A couple of 15 N force acts on a rigid body, such that arm of couple is 85 cm. Calculate moment of couple in the SI system.
Advertisements
उत्तर
Moment of couple = Force × Arm of couple
= 15 × 85 N-cm.
= `15xx85xx1/100` Nm.
= 15 × 0.85
= 12.75 Nm.
संबंधित प्रश्न
What is the SI unit of the moment of force?
A nut is opened by a wrench of length 20 cm. If the least force required is 2N, find the moment of force needed to loosen the nut.
A half metre rod is pivoted at the centre with two weights of 20gf and 12gf suspended at a perpendicular distance of 6 cm and 10 cm from the pivot respectively as shown below.
1) Which of the two forces acting on the rigid rod causes clockwise moment?
2) Is the rod in equilibrium?
3) The direction of 20 kgf force is reversed. What is the magnitude of the resultant moment of the forces on the rod?
The spanner (or wrench) has a long handle.
State one factor on which the magnitude of a non-contact force depends. How does it depend on the factor stated by you?.
Write an expression for the change in momentum of a body of mass m moving with velocity v if v << c.
A car of mass 600 kg is moving with a speed of 10 ms-1 while a scooter of mass 80 kg us moving with a speed of 50 ms-1. Compare their momentum.
Define the moment of force.
Define non-contact forces.
Calculate the magnitude of the force of a couple, when the arm of the couple is 63 cm and the moment of the couple is 21 Nm.
