1 If C is the mid-point of AB then the resultant of forces represented by ÕA and ÖB is given by ---
(A) ÕA+ÕB=20C
(B) OA+OB=OC
(C) ÕA-ÖB=20C
(D) OB=A+C
2 Two forces are said to be like parallel forces when they act --
(A)in the opposite direction and their (B)in the same direction and their line (C)in the same direction and their line (D)none of above
line of action do not meet at a point of action meets at some point. of action do not meet at a point.
3 If P and are the resolved parts of a force then angle between P and is
(A)
(B)90°
(C)180°
(D)30°
4 Two forces acting at a point of rigid body are in equilibrium if they are --
(A)equal in magnitude and in same (B)equal in magnitude and opposite in (C)opposite in direction.
(D)equal in magnitude.
direction
direction
5 If two forces P and acting at an angle then the magnitude R of their resultant force is given by ---,
(A) R=P-+Q+ 2PQ sino (B) R=IP-+-2PQ coso (C) R=1P+Q-2PQ sino (D) R=\P'+ q + 2PQ
6 Resultant of forces is obtained by ------- of the forces.
(Aladdition
(B)subtraction
(C)multiplication
(D)division
7 If two forces P and ê act at right angle then the magnitude R of their resultant force is given by ---
(A)R=P2+Q2
(B)R=P2-Q2
(C) R=IP-+Q
(D) R=IP-
8 The resolved part of the force R along the direction of the unit vector é is ---
(A) R+
(B) R*
(C) R-
(D) R+ õe
9 If the three forces acting on a particle be represented in magnitude and direction by the three sides of a triangle, taken in order, then ----
(A)the forces coincides each other (B)the forces are in equilibrium (C)the forces are non-coplanar (D)none of above.
10 If three forces of magnitudes P.Q and R respectively acting on a particle are in equilibrium each is proportional to ---
(A)the cosine of the angle between the (B)the sine of the angle between the (C)the tangent of the angle between (D)the cotangent of the ang
other two
other two
the other two
the other two
coction of
thorne
Answers
Answer:
1 If C is the mid-point of AB then the resultant of forces represented by ÕA and ÖB is given by ---
(A) ÕA+ÕB=20C
(B) OA+OB=OC
(C) ÕA-ÖB=20C
(D) OB=A+C
2 Two forces are said to be like parallel forces when they act --
(A)in the opposite direction and their (B)in the same direction and their line (C)in the same direction and their line (D)none of above
line of action do not meet at a point of action meets at some point. of action do not meet at a point.
3 If P and are the resolved parts of a force then angle between P and is
(A)
(B)90°
(C)180°
(D)30°
4 Two forces acting at a point of rigid body are in equilibrium if they are --
(A)equal in magnitude and in same (B)equal in magnitude and opposite in (C)opposite in direction.
(D)equal in magnitude.
direction
direction
5 If two forces P and acting at an angle then the magnitude R of their resultant force is given by ---,
(A) R=P-+Q+ 2PQ sino (B) R=IP-+-2PQ coso (C) R=1P+Q-2PQ sino (D) R=\P'+ q + 2PQ
6 Resultant of forces is obtained by ------- of the forces.
(Aladdition
(B)subtraction
(C)multiplication
(D)division
7 If two forces P and ê act at right angle then the magnitude R of their resultant force is given by ---
(A)R=P2+Q2
(B)R=P2-Q2
(C) R=IP-+Q
(D) R=IP-
8 The resolved part of the force R along the direction of the unit vector é is ---
(A) R+
(B) R*
(C) R-
(D) R+ õe
9 If the three forces acting on a particle be represented in magnitude and direction by the three sides of a triangle, taken in order, then ----
(A)the forces coincides each other (B)the forces are in equilibrium (C)the forces are non-coplanar (D)none of above.
10 If three forces of magnitudes P.Q and R respectively acting on a particle are in equilibrium each is proportional to ---
(A)the cosine of the angle between the (B)the sine of the angle between the (C)the tangent of the angle between (D)the cotangent of the ang
other two
other two
the other two
the other two
coction of
thorne
Answer:
b
c
d
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