In each of the following cases identify all objects in the surroundings that exert forces on the system. You hit a baseball with a bat. Choose the baseball as the system. At the instant of contact with the bat, what objects should be included in the surroundings (what objects exert forces on the ball)?

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

d. platinum would have the greatest temperature increase because it has the lowest specific heat.