A horizontally flying bullet of mass m gets stuck in a body of mass M suspended by two identical threads of length l. As a result, the threads swerve through an angle θ. Assuming m << M, find:

a. the velocity of the bullet before striking the body;
b. the fraction of the bullet's initial kinetic energy that turned into heat.

found in the nucleus

has mass of one amu

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

elctricity and magnet is conversion to it