निम्नलिखित में से कौन सा फिल्म लेखक उत्तर प्रदेश से संबंधित है?

 

(A) कमाल अमरोही

(B) डा. राही मासूम रजा

(C) पं. मुखराज शर्मा

(D) सभी

Three component coplaner force of 5kg each act on a particle .If their line of action makes equal angles with each other , determine their resultant.

Force 2P , 3P, 4P act at a point in directions parallel to the sides of an equilatrel tringle taken in order . Find the magnitude and the line of action of resultant.

Force equal to P each act a point in directions parallel to the sides of length 3, 4, 5 m of a tringle taken in order. find their resultant, in magnitude and direction.

If the forces of magnitude  P,Q,R act at a poitparallel to the sides BC, CA, AB respectively of a tringle ABC, Prove that the magnitude of the resultant is 

\( \sqrt{P^2+Q^2+R^2-QRcosA-2RPcosB-2PQcosC}\)

The force acting at a point are parallel to the sides of tringle ABC taken in order and are proportional to the cosine of the opposite angle. show that their resultant is proportional to

 \(\sqrt{1-cosAcosBcosC}\).

Five forces acting at a point O are in equallibrium, four of them whose magnitude 3,4,4,3 kg wt. act along the coplanar line OA, OB, OC,ODrespectively, such that 

\(\angle{AOB=45^{\circ}},\angle{BOC=60^\circ},\angle{COD=15^\circ}\).

ABCD is a quadilateral with AB=2cms,BC=3cms, DA=7cms. Forces of 6,9,15,20 gms.wt.act on a particle parallel to the respective side of the quadilataral . Show that their resultant is a force of 1gmwt. parallel to AD.

Forces of 6,8,12 kg. wt. act along BC,CA, AB of the sides of tringle of lengths 3,4,5 cm respectively .Show that their resultant of forces of 2kg wt. acting parallel to AB.