The piston in an engine is attached to a connecting rod AB, which in turn is connected to a crank arm BC (see figure). The piston slides without friction in a cylinder and is subjected to a force P (assumed to be constant) while moving to the right in the Figure. The connecting rod. with diameter d and length L, is attached at both ends by pins. The crank arm rotates about the axle at C with the pin at B moving in a circle of radius R. The axle at C , which is supported by bearings, exerts a resisting moment M against the crank arm. (a) Obtain a formula for the maximum permissible force P a l l o w . based upon an allowable compressive stress a c in the connecting rod. (b) Calculate the Force P a l l o w for the following data:
The piston in an engine is attached to a connecting rod AB, which in turn is connected to a crank arm BC (see figure). The piston slides without friction in a cylinder and is subjected to a force P (assumed to be constant) while moving to the right in the Figure. The connecting rod. with diameter d and length L, is attached at both ends by pins. The crank arm rotates about the axle at C with the pin at B moving in a circle of radius R. The axle at C , which is supported by bearings, exerts a resisting moment M against the crank arm. (a) Obtain a formula for the maximum permissible force P a l l o w . based upon an allowable compressive stress a c in the connecting rod. (b) Calculate the Force P a l l o w for the following data:
The piston in an engine is attached to a connecting rod AB, which in turn is connected to a crank arm BC (see figure). The piston slides without friction in a cylinder and is subjected to a force P (assumed to be constant) while moving to the right in the Figure. The connecting rod. with diameter d and length L, is attached at both ends by pins. The crank arm rotates about the axle at C with the pin at B moving in a circle of radius R. The axle at C, which is supported by bearings, exerts a resisting moment M against the crank arm.
(a) Obtain a formula for the maximum permissible force Pallow. based upon an allowable compressive stress acin the connecting rod.
(b) Calculate the Force Pallowfor the following data:
4- With the mechanism in the figure, the board at the E end will be compressed. Accordingly, the vertical P arm applied Vertical compression at end E in response to force calculate the force
P=(26)N, L1=(102)mm, L2 = (56)mm,a=b=(10)mm
For two existing torques, what third force at a given distance from the pivot will balance them?
Imagine a meter stick set up as in the figure. It hangs from a central bracket, and two hanging masses can hang from it from each of their brackets. At a third location, a force probe can either pull up or pull down on the stick, depending on what is needed to balance the stick.
The mass of the meter stick is 120 g.
sketch the situation (drawing r1, r2, r3, F1, F2, and F3) and determine the magnitude (value) and direction (+ or -) of each torque. Don't include the mass of a bracket that would hold the hanging mass in place; assume the mass listed is the entire mass hanging at that point.
For each trial, use the principle of equilibrium (where the sum of torques is zero) to calculate the third, unknown force acting at x3
A Pin spanner as shown in Figure, requires moment of 80 Nm to turn the 200 mm diameter shaft about its center O under the action of the applied force P. determine the contact reaction force on the smooth surface at the point A. Engagement of the pin at B may be considered to occur at the periphery of the collar
OPTIONS:(MULTI CORRECT(MAY BE)):
1.Reaction at Point A is around 1047 N
2.Value of force P is around 102 N
3.Value of force P is around 133 N
4.Reaction at Point A is around 720 N
5.Reaction at Point A is around 1321 N
6.Value of force P is around 200 N
7.Value of force P is around 213 N
8.Reaction at Point A is around 970 N
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