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VishalProfessional

Asked: 3 months agoIn: Mechanical Engineering

A semicircle of 90 mm radius is cut out from a trapezium as shown in Fig.12 Find the position of the Centre of gravity of the figure

VishalProfessional

Asked: 3 months agoIn: Mechanical Engineering

A uniform lamina shown in Fig. 11 consists of a rectangle, a circle and a triangle. Determine the center of gravity of the lamina. All dimensions are in mm

VishalProfessional

Asked: 3 months agoIn: Mechanical Engineering

A screw jack raises a load of 40 KN. The screw is square threaded having three threads per 20 mm length and 40 mm in diameter. Calculate the force required at the end of a lever 400 mm long measured from the axis of the screw, if the coefficient of friction between screw and nut is 0.12

A screw jack raises a load of 40 KN. The screw is square threaded having three threads per 20 mm length and 40 mm in diameter. Calculate the force required at the end of a lever 400 mm ...Read more

VishalProfessional

Asked: 3 months agoIn: Mechanical Engineering

A ladder of length 4 m, weighing 200 N is placed against a vertical wall as shown in Fig.10. The coefficient of friction between the wall and the ladder is 0.2 and that between floor and the ladder is 0.3. The ladder, in addition to its own weight, has to support a man weighing 600 N at a distance of 3 m from A. Calculate the minimum horizontal force to be applied at A to prevent slipping.

A ladder of length 4 m, weighing 200 N is placed against a vertical wall as shown in Fig.10. The coefficient of friction between the wall and the ladder is 0.2 and that between floor and the ladder ...Read more

VishalProfessional

Asked: 3 months agoIn: Mechanical Engineering

A ladder 5 meters long rests on a horizontal ground and leans against a smooth vertical wall at an angle 70° with the horizontal. The weight of the ladder is 900 N and acts at its middle. The ladder is at the point of sliding, when a man weighing 750N stands on a rung 1.5 meter from the bottom of the ladder. Calculate the coefficient of friction between the ladder and the floor.

A ladder 5 meters long rests on a horizontal ground and leans against a smooth vertical wall at an angle 70° with the horizontal. The weight of the ladder is 900 N and acts at its middle. The ...Read more

VishalProfessional

Asked: 3 months agoIn: Mechanical Engineering

Block A of mass 30 kg rests on block B of mass 40 kg as shown in Fig.9. Block A is restrained from moving by a horizontal rope tied at point C, what force P applied to the plane inclined at 30° with horizontal is necessary to start block B down the plane. Take coefficient of friction for all surfaces as 0.35.

Block A of mass 30 kg rests on block B of mass 40 kg as shown in Fig.9. Block A is restrained from moving by a horizontal rope tied at point C, what force P applied to the ...Read more

VishalProfessional

Asked: 3 months agoIn: Mechanical Engineering

Two blocks W1 and W2 resting on two inclined planes are connected by a horizontal bar AB as shown in Fig.8. If W1 is equals 1000 N, determine the maximum value of W2 for which the equilibrium can exists. The angle of limiting friction is 20° at all rubbing faces.

Two blocks W1 and W2 resting on two inclined planes are connected by a horizontal bar AB as shown in Fig.8. If W1 is equals 1000 N, determine the maximum value of W2 for which the equilibrium can ...Read more

VishalProfessional

Asked: 3 months agoIn: Mechanical Engineering

Find the value of ‘ϴ’ if the block ‘A’ and ‘B’ shown in Fig.7 have impending motion. Given block A = 20 kg, block B = 20 kg, µA = µB = 0.25.

VishalProfessional

Asked: 3 months agoIn: Mechanical Engineering

Find the least force required to drag a body of weight ‘W’ placed on a rough inclined plane having inclination ‘α’ to the horizontal. The force is applied to the body in such a way that it makes an angle ‘ϴ’ to the inclined plane and the body is on the point of motion up the plane.

Find the least force required to drag a body of weight ‘W’ placed on a rough inclined plane having inclination ‘α’ to the horizontal. The force is applied to the body in such a way that it makes ...Read more