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Questions and Answers
What is the purpose of dynamic force analysis?
What is the purpose of dynamic force analysis?
- Evaluating input and joint forces in motion (correct)
- Determining static forces
- Analyzing torque equilibrium
- Calculating mass of the body
How is the inertia force defined?
How is the inertia force defined?
- Equal to the weight of the body
- Dependent on the body's volume
- Opposite in magnitude to the accelerating force (correct)
- Equal to the gravitational force
What is the relationship between inertia force and linear acceleration?
What is the relationship between inertia force and linear acceleration?
- Inertia force equals linear velocity
- Inertia force is independent of linear acceleration (correct)
- Inertia force decreases with linear acceleration
- Inertia force is proportional to linear acceleration
What does the inertia torque represent?
What does the inertia torque represent?
How can a system of forces acting on a rigid body be represented?
How can a system of forces acting on a rigid body be represented?
In what direction does the force passed through the center of gravity act?
In what direction does the force passed through the center of gravity act?
What is the term used to describe the curve traced by a particle while moving along a screw thread?
What is the term used to describe the curve traced by a particle while moving along a screw thread?
Which type of screw threads are mainly used for tightening pieces together like bolts and nuts?
Which type of screw threads are mainly used for tightening pieces together like bolts and nuts?
What is the relationship between pitch, lead, and number of threads in a single-threaded screw?
What is the relationship between pitch, lead, and number of threads in a single-threaded screw?
Which principle states that the resultant force acting on a body and the reversed effective force are in equilibrium?
Which principle states that the resultant force acting on a body and the reversed effective force are in equilibrium?
What is the inertia force described as in D-Alembert's Principle?
What is the inertia force described as in D-Alembert's Principle?
Which device works on a principle similar to that of an inclined plane for lifting heavy loads?
Which device works on a principle similar to that of an inclined plane for lifting heavy loads?
What is the product of mass and linear acceleration of the center of mass of a body according to D-Alembert's Principle?
What is the product of mass and linear acceleration of the center of mass of a body according to D-Alembert's Principle?
Which type of screw threads offer more frictional resistance and prevent nuts from slackening?
Which type of screw threads offer more frictional resistance and prevent nuts from slackening?
What is the slope or inclination of the thread with the horizontal known as?
What is the slope or inclination of the thread with the horizontal known as?
What does FI represent in D-Alembert's Principle?
What does FI represent in D-Alembert's Principle?
What is the total thrust from the propeller in Example 1?
What is the total thrust from the propeller in Example 1?
What is the torque required to lift a load by a screw jack if the pitch of the screw is represented by p, mean diameter by d, helix angle by a, effort applied at the circumference by P, load to be lifted by W, and coefficient of friction by µ?
What is the torque required to lift a load by a screw jack if the pitch of the screw is represented by p, mean diameter by d, helix angle by a, effort applied at the circumference by P, load to be lifted by W, and coefficient of friction by µ?
In Example 2, what power is absorbed when the shaft runs at 105 r.p.m. carrying a load of 150 kN under uniform pressure?
In Example 2, what power is absorbed when the shaft runs at 105 r.p.m. carrying a load of 150 kN under uniform pressure?
In the context of a square threaded screw, what is the normal reaction given the helix angle a?
In the context of a square threaded screw, what is the normal reaction given the helix angle a?
In the context of collar bearings, what is the external diameter of the collars in Example 1?
In the context of collar bearings, what is the external diameter of the collars in Example 1?
What is the total torque required to overcome friction in a turning pair if an effort P1 is applied at the end of a lever of arm length l?
What is the total torque required to overcome friction in a turning pair if an effort P1 is applied at the end of a lever of arm length l?
In a journal bearing, what forms a line contact when not lubricated?
In a journal bearing, what forms a line contact when not lubricated?
What does the coefficient of friction value of 0.12 represent in the context of collar bearings?
What does the coefficient of friction value of 0.12 represent in the context of collar bearings?
What angle is represented by 2 in the context of V-thread?
What angle is represented by 2 in the context of V-thread?
What does the variable 'n' represent in the given context of collar bearings examples?
What does the variable 'n' represent in the given context of collar bearings examples?
How is the speed of rotation (N) related to angular velocity (ω) in the provided text?
How is the speed of rotation (N) related to angular velocity (ω) in the provided text?
How is the normal reaction calculated for V-thread where the axial component must be equal to the axial load W?
How is the normal reaction calculated for V-thread where the axial component must be equal to the axial load W?
What is NOT true about the torque required to overcome friction between the screw and nut?
What is NOT true about the torque required to overcome friction between the screw and nut?
What happens to the reaction R in a journal bearing when lubricated?
What happens to the reaction R in a journal bearing when lubricated?
What is assumed to be proportional for the rate of wear in rubbing surfaces?
What is assumed to be proportional for the rate of wear in rubbing surfaces?
What is the formula for the vertical load acting on a small ring of radius r along a cone?
What is the formula for the vertical load acting on a small ring of radius r along a cone?
In the context of uniform wear, what is the relationship between the intensity of pressure and the distance from the central axis?
In the context of uniform wear, what is the relationship between the intensity of pressure and the distance from the central axis?
What is the formula for the total frictional torque acting on a conical pivot bearing?
What is the formula for the total frictional torque acting on a conical pivot bearing?
When using a trapezoidal or truncated conical pivot bearing, what is considered to be uniform?
When using a trapezoidal or truncated conical pivot bearing, what is considered to be uniform?
What is the total torque acting on a bearing obtained by integrating the value of $T_r$ within the limits between $r_1$ and $r_2$?
What is the total torque acting on a bearing obtained by integrating the value of $T_r$ within the limits between $r_1$ and $r_2$?
For a collar bearing, what is its primary function?
For a collar bearing, what is its primary function?
What is the coefficient of friction assumed in Example 1 concerning power lost in friction?
What is the coefficient of friction assumed in Example 1 concerning power lost in friction?
In Example 1, if the shaft diameter is given in millimeters, what is its equivalent value in meters?
In Example 1, if the shaft diameter is given in millimeters, what is its equivalent value in meters?
What is the total power absorbed in friction for the conical pivot bearing supporting a load of 20 kN with a cone angle of 120º?
What is the total power absorbed in friction for the conical pivot bearing supporting a load of 20 kN with a cone angle of 120º?
What is the coefficient of friction represented by in the given text?
What is the coefficient of friction represented by in the given text?
In the context provided, what does the angle ø represent?
In the context provided, what does the angle ø represent?
Which type of pivot may have a flat surface or conical surface?
Which type of pivot may have a flat surface or conical surface?
What type of bearing is typically used in modern practice for large thrusts, like in propeller shafts of ships?
What type of bearing is typically used in modern practice for large thrusts, like in propeller shafts of ships?
What parameter determines the rate of wear according to the given text?
What parameter determines the rate of wear according to the given text?
In the context provided, what is represented by T = W.rtanø?
In the context provided, what is represented by T = W.rtanø?
What does a truncated pivot represent?
What does a truncated pivot represent?
What does wear being uniform throughout the bearing surface imply?
What does wear being uniform throughout the bearing surface imply?
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