B) A skilled jet fighter flies a stunt plane in a vertical circle of 1200 ft radius at constant speed of 140 mi h/1. Calculate the jet fighter's
acceleration at
(i) the highest point
(ii) the lowest point
Given
1 mi = 1609 m
1 ft = 0.3 m

second mirror gathers light from a faraway object and reflects it to another mirror. - a.

answer and explanation;

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

365.25 earth days are in the year of a light year