1.
A force of is required to just start moving a body of mass over ice. The coefficient of static friction is
2.
Two bodies and of masses 10 kg and 15 kg respectively kept on a smooth, horizontal surface are tied to the ends of a light string. If represents the tension in the spring when a horizontal force is applied to (as shown in figure 1) and T be the tension when it is applied to (figure 2), then which of the following is true
3.
A stationary body of mass 3 kg explodes into three equal pieces. Two of the pieces fly off in two mutually perpendicular directions, one with velocity of and the other with a velocity of . If the explosion occurs in , the force acting on the third piece in newtons is