statics

Related Questions

• AB is a straight line of length 150cm. Two particles of masses 1kg and 3kg are placed at a distance of 15cm form A and 50 cm from B respectively. The distance of the third particle of mass 2kg from A, so that the C.G. of the system is at the middle point of AB is

  ---

• Two unlike parallel forces acting at points A and B form a couple of moment G. If their lines of action are turned through a right angle, they form a couple of moment H. Show that when both act at right angles to AB, they form a couple of moment

  ---

• P, Q, R are the points on the sides BC, CA, AB of the triangle ABC such that $BP:PC=CQ:QA=AR:RB=m:n$. If $\Delta $denotes the area of the $\Delta ABC$, then the forces $\overrightarrow{AP},\overrightarrow{BQ},\overrightarrow{CR}$ reduce to a couple whose moment is

  ---

• A man carries a hammer on his shoulder and holds it at the other end of its light handle in his hand. If he changes the point of support of the handle at the shoulder and if x is the distance between his hand and the point of support, then the pressure on his shoulder is proportional to

  ---

• Two parallel forces not having the same line of action form a couple if they are

  ---