Adjoining figure shows a force of 40 N acting at 30° to the horizontal on a body of mass 5kg
on a smooth horizontal surface. Assuming that the acceleration of free - fall is 10 m/s, which
7.
40N
following statements is (are) correct ? (MAQ)
a) The horizontal force acting on the body is 20 N
b) The weight of the 5kg mass acts vertically downwards
c) The net vertical force acting on the body is 30 N
d) The net vertical force acting on the body is ON
Answers
Answered by
11
Answer:
Opt c
Explanation:
The horizontal force of the body
F(h)=40cos30
=20root3 N
So by this we know that the first opt is incorrect.
Weight of the body=mg
=5×10=50N
So the 2nd opt is also incorrect.
Net vertical force=mg-vertical component of
the force applied
=50-Fsin30
=50-20=30N
So the 3rd opt is correct.
4th opt is not correct because the net force is 30N
Similar questions
Math,
4 months ago
Math,
4 months ago
Social Sciences,
1 year ago
Physics,
1 year ago
Social Sciences,
1 year ago