Asked by johnson

a body is under of 2 forces 7n and 10n find the resultant of 2 forces if (a)the forces are parallel and act in thesame direction (b)the forces are parallel and act in opposite direction(c)the two forces are inclined and act at an angle of 60 degree to each other (d)the 2 forces are inclined at an angle of 160 degree (e) the two forces are inclined at 90 degree?
Answered by Henry
a. F = 7 + 10 = 17 N.

b. F = 10-7 = 3 N.

c. F1 = 7N[45o].
F2 = 10N[105o].

X = 7*cos45 + 10*cos105 = 2.36 N.
Y = 7*sin45 + 10*sin105 = 14.6 N.

tanA = Y/X = 14.6/2.36 = 6.18644
A = 80.8o
Fr=Y/sinA = 14.6/sin80.8=14.8 N.[80.8o]
= Resultant force.

d. Fr = 7[160o] + 10[160o] = 17N[160o].

e. Fr = 7[90o] + 10[90o] = 17N[90o]
Answered by mali
500
Answered by ben
a+b
Answered by Shedrack
Where is the correct answer to the question now?
Answered by Anonymous
I don't think that the answer for question c is correct it doesn't respond to the question given
Answered by Andy
I don't understand the answer to question C.
Answered by Ebere
I don't understand want you guys solved in question c... Pls explain more
Answered by Precious.
Question c, was solved using resultant force formula R=√ x^2+y^2. SIMPLE!!!!!!!!!!. thanks.
Answered by Vicky
Don't understand the solution
Answered by victor
I don't understand (c)

Answered by victor
I don't understand c
Answered by Odianose angel
I don't understand
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