Question

SECTION -C
28. (a) What is a projectile? A projectile is fired with a velocity u making an angle with the
horizontal. Show that its trajectory is a parabola.
(b) derive expressions for its : (i) time of flight, (ii) maximum height, and (iii) horizontal range.
29. Derive expressions for centripetal acceleration of an object in uniform circular motion in a plane.
What will be the direction of the velocity and acceleration at any instant?
30. What are concurrent forces? Obtain the condition for the equilibrium of three concurrent forces.
31. Define angle of friction. Deduce its relation with coefficient of friction.
OR
Define angle of response. Deduce its relation with coefficient of static friction.
32. To stimulate car accidents, auto manufacturers study the collisions of moving cars with mount
springs of different spring constants. Consider a typical simulation with a car of mass 1000 kg
moving with a speed of 18.0 kmh on a smooth road and colliding with a horizontally mounte
25 x 10 Nm! What is the maximum compression of the spring?​

Answer 1

Answer:

sory

Explanation: