In which case will a rope have the greater tension :(a) One end of the rope is fastened to a fixed support and the other is pulled by a man with a force 2F.(b) Two men pull the ends of the rope with forces F equal in magnitude but opposite in direction.

A rope of length L is pulled with a constant force F.The tension T in the rope at u point at distance x from the end where the force is applied ,is :

A wire is suspended from the ceiling and strecthed under the action of a weight F suspended form its other end. Teh force exerted by the ceiling on it is equal and opposite to the weight.

Two persons having the same mass are standing on ice-skates some distance apart on a frictionless surface.a rope is fastened around the body of a person,the other end of which si in the hand of the second person.What would happen if the second person pulls the rope?

A wire of length L and radius r is clalmped rigidly at one end. When the other end of the wire is pulled by force f, its length increaes by l. Another wire of the same material of length 2 L and radius 2 r, is pulled by a force 2 f. Find the increase in length of this wire.

The two parallel circular loops of wire shown in fig each have a radius R = 20 cm and are separated by a distance a = 0.5 cm. The bottom loop is held fixed and the top loop hangs from one end of the arm of an equal arm balance. Since a is much smaller than R, the magnetic field produced by one loop at the other is practically the same as if both were long straight wires. if the curret in each loop is 20 A, how big is the force of attraction of one loop for the other?

Figure 14.26 (a) shows a spring of force constant k clamped rigidly at one end and a mass m attached to its free end. A force F applied at the free end stretches the spring. Figure 14.26 (b) shows the same spring with both endsfree and attached to a mass m at either end. Each end of the spring in Fig. 14.26(b) is stretched by the same force F If the mass in Fig. (a) and the two masses in Fig. (b) are released, what is the period of oscillation in each case ?

Figure 14.26 (a) shows a spring of force constant k clamped rigidly at one end and a mass m attached to its free end. A force F applied at the free end stretches the spring. Figure 14.26 (b) shows the same spring with both endsfree and attached to a mass m at either end. Each end of the spring in Fig. 14.26(b) is stretched by the same force F What is the maximum extension of the spring in the two cases ?

A mass of 2 kg is suspended with thread AB. Thread CD of the same type is attached to the other end of 2 kg mass. Lower thread is pulled gradually. harder and harder in the downward direction so as to apply force on AB. In the above given problem if the lower thread is pulled with a jerk, what happens?

A copper and a steel wire of the same diameter are connected end to end. A deforming force F is applied to this composite wire which causes a total elongation of 1 cm. The two wies will have

A mass of 2 kg is suspended with thread AB. Thread CD of the same type is attached to the other end of 2 kg mass. Lower thread is pulled gradually. harder and harder in the downward direction so as to apply force on AB. Which of the threds will break and why?