1 a force of 72 dyne is inclined to the horizontal at an angle of 60o Find - Physics - Laws Of Motion

Question

1 a force of 72 dyne is inclined to the horizontal at an angle
of 60o
Find the acceleration it produces in a mass if 9gram which moves
in a horizontal direction
2 a body of mass 1 kg initially at rest explodes and breaks into
three fragments of masses in the ratio 1:1:3 the two pieces of
equal mass fly off perpendicular to each other with a speed of
3 ms-1 each calculate the velocity of the heavier
fragment

Himanshu · Accepted Answer

(1) Force in the horizontal direction = Fcos60 = 36 dynes Mass = 9 gm Acceleration = 36/9 = 4 cm/s2 (2) Initial mass = 1 kg The three masses into which it breaks is 200 gm, 200 g, and 600 gm

$600 v = 200 (3) \cos 45 + 200 (3) \cos 45 = 1200 \cos 45 v = 2 \cos 45 = \sqrt{2} m s^{- 1}$