Question

A 5kg block is tied to a Im string and is
rotated with a constant angular velocity of
2 rad/sec in the horizontal plane. Find the
linear momentum of the block.​

Answer 1

Explanation:

1. Mass, m=0.2 kg
3. Radius, r=1 m
5. Angular speed, ω=90 rpm
7. ⟹ω=6090
9. ⟹ω=1.5 rps
11. ⟹ω=3π rad/s
13. (a) Angular velocity, ω=3π rad/s
15. (b) Centripetal acceleration. a=rw2
17. ⟹a=1×3π×3π
19. ⟹a=9π2 m/s2
21. (c) Centripetal Force, F=ma
23. ⟹F=0.2×9π2
25. ⟹F=1.8π2 N
27. (d) Tension in string, = Centripetal Force
29. ⟹T=F=1.8π2 N